# HawkInc

> Digital Tools, Templates & Resources for Work and Life


## Posts

- [Notion Style Daily Planner Without Notion: Plan Your Day, Track Habits and Goals Offline](https://hawkinc.store/notion-style-daily-planner/): Want a Notion style daily planner without the setup or subscription? Copy this simple daily planning system and get an offline habit and goal tracker dashboard with a printable PDF.
- [Etsy Mockups for Digital Products: 7 Proven Tips for Stunning Listings (2026)](https://hawkinc.store/etsy-mockups-for-digital-products/): Etsy mockups for digital products that win the click: exact image sizes, scenes that convert, 7 practical tips, and a done-for-you mockup service.
- [ADHD Decluttering System: Declutter Your Home in 20-Minute Zones (+ Free Room-by-Room Checklist)](https://hawkinc.store/adhd-decluttering-system/): An ADHD decluttering system that works: break your home into 20-minute zones, use a Maybe Box with deadlines, and turn it into a cleaning schedule. Free room-by-room checklist inside.
- [Real Estate Marketing Templates: 10 Posts Every Agent Needs (+ Sizes & Open House Checklist)](https://hawkinc.store/real-estate-marketing-templates/): Real estate marketing templates explained: the 10 posts every agent needs, social media and flyer sizes, an open house flyer checklist, a weekly posting plan and how to edit Canva templates.
- [ISO 17025 Guide: How to Take Your Lab From Standard to Accreditation (2026)](https://hawkinc.store/iso-17025-guide/): A practical ISO 17025 guide for testing and calibration labs: what the standard requires, a 10-step accreditation roadmap, required documents and FAQs.
- [Thyrafemme Balance Review 2026: Ingredients, Price, Benefits & Is It Worth It?](https://hawkinc.store/thyrafemme-balance-review/): Thyrafemme Balance review: 14 ingredients explained, price from $49/bottle, 60-day guarantee, pros, cons and who should avoid it. Read before you buy.
- [Calisthenics for Men Over 40: A Military-Inspired 3-Level Home Workout Plan](https://hawkinc.store/calisthenics-for-men-over-40/): Calisthenics for men over 40: a military-inspired, joint-friendly bodyweight workout plan with 3 levels, 8-week structure, Excel workout tracker, printable logs and FAQs.

## Pages

- [UK Side Hustle Tax Calculator 2026/27](https://hawkinc.store/tools/uk-side-hustle-tax-calculator/): Extra income tax and Class 4 NI on side-hustle profit, with the £1,000 trading allowance.
- [Candle Wax & Fragrance Oil Calculator](https://hawkinc.store/tools/candle-fragrance-calculator/): Wax and fragrance oil per candle and per batch by vessel size, wax type and fragrance load.
- [Crochet Yarn Calculator – How Much Yarn Do I Need?](https://hawkinc.store/tools/crochet-yarn-calculator/): Yards and skeins for blankets and projects by size, yarn weight and stitch, or from a swatch.
- [Cross Stitch Fabric Size Calculator](https://hawkinc.store/tools/cross-stitch-fabric-calculator/): Finished design size and fabric to cut for any stitch count on Aida, evenweave or linen.
- [Free Tools](https://hawkinc.store/tools/): Free online calculators: math, chemistry, physics, biology and accounting solvers, plus lab, water, Etsy and KDP tools. No sign-up, nothing stored.
- [Home](https://hawkinc.store/)
- [Blog](https://hawkinc.store/blog/)
- [ISO 17025 Checklist](https://hawkinc.store/iso-17025-checklist/): Free ISO/IEC 17025 internal audit checklist for laboratories preparing for accreditation.
- [Free Habit Tracker](https://hawkinc.store/free-habit-tracker/): Get the free Excel habit tracker with an automatic streak counter.
- [Advertising & Affiliate Disclosure](https://hawkinc.store/advertising-disclosure/): Advertising & Affiliate Disclosure for HawkInc (hawkinc.store/).
- [Disclaimer](https://hawkinc.store/disclaimer/): Disclaimer for HawkInc (hawkinc.store/).
- [Terms of Use](https://hawkinc.store/terms/): Terms of Use for HawkInc (hawkinc.store/).
- [Cookie Policy](https://hawkinc.store/cookie-policy/): Cookie Policy for HawkInc (hawkinc.store/).
- [Privacy Policy](https://hawkinc.store/privacy-policy-2/): Privacy Policy for HawkInc (hawkinc.store/).
- [Laboratory & Quality](https://hawkinc.store/laboratory-quality/): ISO/IEC 17025:2017 is the international standard for the competence, impartiality and consistent operation of testing and calibration laboratories. HawkInc’s Laboratory & Quality resources are built for labs working toward — or maintaining — ISO/IEC 17025 accreditation, by a lab operations manager who built a quality management system and led a laboratory through accreditation. Unlike our everyday printables, these are professional documentation products supported by in-depth educational guidance and free QC calculators. Where to start New to the standard? Begin with our guide to what ISO/IEC 17025 is and how to take your lab from standard to accreditation, then work through document…
- [Contact](https://hawkinc.store/contact/): Contact HawkInc — product questions, custom ISO 17025 documentation and partnerships.
- [About HawkInc](https://hawkinc.store/about/): HawkInc is an independent digital-resource company making practical tools, templates and professional documentation.
- [Calories Burned Calculator: Walking, Running & 25 Activities](https://hawkinc.store/tools/calories-burned-calculator/): Free calories burned calculator for 25 activities, from walking and running to cricket and skipping, using MET values with your weight and exercise time.
- [Heart Rate Zone Calculator: Target & Max Heart Rate](https://hawkinc.store/tools/heart-rate-zone-calculator/): Free heart rate zone calculator: maximum heart rate and 5 training zones in beats per minute, using the Karvonen heart rate reserve method when you know your resting pulse.
- [Ideal Weight Calculator: Ideal Body Weight for Your Height](https://hawkinc.store/tools/ideal-weight-calculator/): Free ideal weight calculator: ideal body weight for your height and sex with the Devine, Robinson, Miller and Hamwi formulas, plus the healthy BMI weight range.
- [Body Fat Calculator: US Navy Method & BMI Estimate](https://hawkinc.store/tools/body-fat-calculator/): Free body fat calculator using the US Navy tape method (neck, waist, hip) and a BMI-based estimate, with your body fat category, fat mass and lean mass.
- [Water Intake Calculator: How Much Water to Drink a Day](https://hawkinc.store/tools/water-intake-calculator/): Free water intake calculator: daily water target in litres, glasses and ounces from your weight, exercise, hot weather, pregnancy or breastfeeding.
- [Food Nutrition Calculator: Calories, Protein, Carbs & Fat](https://hawkinc.store/tools/food-nutrition-calculator/): Free food nutrition calculator: add foods by weight and get calories, protein, carbs, fat and fibre for a meal or a whole day, including roti, daal, rice and biryani.
- [Macro Calculator: Protein, Carbs & Fat Grams](https://hawkinc.store/tools/macro-calculator/): Free macro calculator: turn your daily calories into grams of protein, carbs and fat for balanced, high-protein, low-carb or keto diets, with per-meal amounts.
- [Protein Intake Calculator: How Much Protein Per Day](https://hawkinc.store/tools/protein-intake-calculator/): Free protein intake calculator: grams of protein per day for your weight and goal, from the RDA to muscle gain and fat loss, split per meal with food examples.
- [Calorie Calculator: BMR & TDEE for Weight Loss or Gain](https://hawkinc.store/tools/calorie-calculator/): Free calorie calculator: your BMR and TDEE with the Mifflin-St Jeor equation, plus daily calories to lose, maintain or gain weight at a safe pace.
- [BMI Calculator: Body Mass Index & Healthy Weight](https://hawkinc.store/tools/bmi-calculator/): Free BMI calculator in kg/cm or lb/ft: your body mass index, WHO and Asian BMI categories, healthy weight range for your height, and how far you are from it.
- [Ideal Gas Law Calculator (PV = nRT) & Combined Gas Law](https://hawkinc.store/tools/ideal-gas-law-calculator/): Free ideal gas law calculator: solve PV = nRT for pressure, volume, moles or temperature in any units, or use the combined gas law P1V1/T1 = P2V2/T2.
- [Density Calculator: Mass, Volume & Density](https://hawkinc.store/tools/density-calculator/): Free density calculator: solve ρ = m/V for density, mass or volume in kg/m³, g/cm³ or g/mL, and compare with common materials like water, aluminium and gold.
- [Specific Heat Calculator (q = mcΔT)](https://hawkinc.store/tools/specific-heat-calculator/): Free specific heat calculator: solve q = mcΔT for heat energy, mass, specific heat capacity or temperature change, with common materials and unit conversion.
- [Half-Life Calculator: Radioactive Decay](https://hawkinc.store/tools/half-life-calculator/): Free half-life calculator: find the remaining amount, initial amount, elapsed time or half-life for radioactive decay, plus the decay constant and a decay curve.
- [Buffer pH Calculator (Henderson–Hasselbalch)](https://hawkinc.store/tools/buffer-ph-calculator/): Free Henderson–Hasselbalch calculator: find buffer pH, pKa or the base-to-acid ratio, with common buffer pKa values and how to prepare a buffer.
- [Titration Calculator: Find Unknown Concentration](https://hawkinc.store/tools/titration-calculator/): Free titration calculator: find the unknown concentration or volume in an acid-base or redox titration from the balanced equation mole ratio, with steps.
- [Force Calculator: Newton’s Second Law (F = ma) & Weight](https://hawkinc.store/tools/force-calculator/): Free force calculator: solve Newton’s second law F = ma for force, mass or acceleration, find weight on Earth and other planets, and friction force.
- [Momentum & Impulse Calculator (p = mv)](https://hawkinc.store/tools/momentum-calculator/): Free momentum calculator: solve p = mv, impulse J = FΔt, and perfectly inelastic collisions for final velocity, with kinetic energy lost in the collision.
- [Energy, Work & Power Calculator: KE, PE, W = Fd, P = W/t](https://hawkinc.store/tools/energy-work-power-calculator/): Free physics energy calculator: kinetic energy ½mv², gravitational potential energy mgh, work W = Fd cos θ and power P = W/t, solving for any unknown.
- [Pressure Calculator: P = F/A & Fluid Pressure (ρgh)](https://hawkinc.store/tools/pressure-calculator/): Free pressure calculator: solve P = F/A, hydrostatic pressure P = ρgh at any depth, and convert between Pa, kPa, bar, atm, psi and mmHg.
- [Wave Speed, Frequency & Wavelength Calculator (v = fλ)](https://hawkinc.store/tools/wave-calculator/): Free wave calculator: solve v = fλ for wave speed, frequency or wavelength, find the period, and get photon energy E = hf for light and electromagnetic waves.
- [Lens & Mirror Calculator: Thin Lens Equation & Magnification](https://hawkinc.store/tools/lens-calculator/): Free lens and mirror calculator: solve 1/f = 1/u + 1/v for focal length, object or image distance, with magnification, image type and lens power in dioptres.
- [Centripetal Force & Circular Motion Calculator](https://hawkinc.store/tools/centripetal-force-calculator/): Free centripetal force calculator: solve F = mv²/r for force, mass, speed or radius, plus centripetal acceleration, angular velocity, period and RPM.
- [Gravitational Force Calculator: Newton’s Law of Gravitation](https://hawkinc.store/tools/gravitational-force-calculator/): Free gravitational force calculator: solve Newton’s law F = Gm₁m₂/r² for any unknown, plus surface gravity, orbital speed, orbital period and escape velocity.
- [Snell’s Law Calculator: Refraction & Critical Angle](https://hawkinc.store/tools/snells-law-calculator/): Free Snell’s law calculator: find the angle of refraction, incidence or refractive index from n₁sinθ₁ = n₂sinθ₂, plus the critical angle and total internal reflection.
- [Hooke’s Law Calculator: Spring Force, Constant & Energy](https://hawkinc.store/tools/hookes-law-calculator/): Free Hooke’s law calculator: solve F = kx for spring force, spring constant or extension, with elastic potential energy, springs in series/parallel and oscillation period.
- [Coulomb’s Law Calculator: Electric Force Between Charges](https://hawkinc.store/tools/coulombs-law-calculator/): Free Coulomb’s law calculator: find the electric force between two point charges, either charge or the distance, plus the electric field and potential energy.
- [PPM Converter: ppm, mg/L, %, Molarity & mg/m³](https://hawkinc.store/tools/ppm-converter/): Free ppm converter for water and air: convert ppm, ppb, mg/L, µg/L, g/L, percent and molarity, or gas ppm to mg/m³ using molecular weight.
- [Empirical & Molecular Formula Calculator](https://hawkinc.store/tools/empirical-formula-calculator/): Free empirical formula calculator: enter percent composition or grams of each element to get the empirical formula and, with the molar mass, the molecular formula.
- [Temperature Converter: Celsius, Fahrenheit, Kelvin & Rankine](https://hawkinc.store/tools/temperature-converter/): Free temperature converter: convert between Celsius, Fahrenheit, Kelvin, Rankine and Réaumur instantly, with formulas, steps and a table of key temperatures.
- [Limiting Reactant & Percent Yield Calculator](https://hawkinc.store/tools/limiting-reactant-calculator/): Free limiting reactant calculator: balance the equation, enter reactant masses, and get the limiting reagent, theoretical yield, excess left over and percent yield.
- [Bacterial Growth Calculator: Doubling & Generation Time](https://hawkinc.store/tools/bacterial-growth-calculator/): Free bacterial growth calculator: find final cell count, initial count, time or generation (doubling) time from N = N₀ × 2ⁿ, with growth rate and a growth curve.
- [Population Growth Calculator: Exponential & Logistic](https://hawkinc.store/tools/population-growth-calculator/): Free population growth calculator: exponential P = P₀e^(rt) and logistic growth with carrying capacity. Find population, rate, time or doubling time, with a chart.
- [Microscope Magnification Calculator: Image & Actual Size](https://hawkinc.store/tools/microscope-magnification-calculator/): Free microscope magnification calculator: total magnification, image size, actual size of a specimen and field of view at any objective, with unit conversion.
- [Beer-Lambert Law Calculator: Absorbance & Concentration](https://hawkinc.store/tools/beer-lambert-law-calculator/): Free Beer-Lambert law calculator: solve A = εlc for absorbance, concentration, molar absorptivity or path length, and convert absorbance to % transmittance.
- [Serial Dilution Calculator: Dilution Factor & CFU/mL](https://hawkinc.store/tools/serial-dilution-calculator/): Free serial dilution calculator: concentration after each step, dilution factor, number of steps and transfer volumes, plus CFU/mL from a plate count.
- [Hemocytometer Calculator: Cell Count & Viability](https://hawkinc.store/tools/hemocytometer-calculator/): Free hemocytometer calculator: cells per mL from a Neubauer chamber count with dilution, total cells, volume to seed, and trypan blue viability.
- [Hardy-Weinberg Calculator: Allele & Genotype Frequencies](https://hawkinc.store/tools/hardy-weinberg-calculator/): Free Hardy-Weinberg calculator: allele frequencies p and q, genotype frequencies p², 2pq and q², carrier numbers, and a chi-square test from genotype counts.
- [Chi-Square Calculator: Goodness of Fit & Independence](https://hawkinc.store/tools/chi-square-calculator/): Free chi-square calculator: goodness-of-fit for genetic ratios like 3:1 and 9:3:3:1, and contingency-table tests of independence, with df, p-value and steps.
- [Depreciation Calculator: Straight Line, Reducing Balance & SYD](https://hawkinc.store/tools/depreciation-calculator/): Free depreciation calculator: yearly schedules for straight-line, reducing balance (WDV), double declining, SYD and units of production.
- [Break-Even Point Calculator: Units, Sales & Margin of Safety](https://hawkinc.store/tools/break-even-calculator/): Free break-even calculator: break-even units and sales, contribution margin, CM ratio, target profit units and margin of safety, with a chart.
- [Loan EMI Calculator with Amortization Schedule](https://hawkinc.store/tools/loan-emi-calculator/): Free loan EMI calculator: monthly installment, total interest and an amortization schedule for home, car or personal loans, with prepayments.
- [DNA Sequence Calculator: Complement, mRNA, Protein & GC Content](https://hawkinc.store/tools/dna-sequence-calculator/): Free DNA sequence calculator: complement, reverse complement, DNA to mRNA, codon-to-protein translation, GC content, Tm and molecular weight.
- [Punnett Square Calculator: Monohybrid, Dihybrid & Trihybrid](https://hawkinc.store/tools/punnett-square-calculator/): Free Punnett square calculator for monohybrid, dihybrid and trihybrid crosses, with gametes, the full grid and genotype and phenotype ratios.
- [Ohm’s Law Calculator: Voltage, Current, Resistance & Power](https://hawkinc.store/tools/ohms-law-calculator/): Free Ohm’s law calculator: get volts, amps, ohms or watts from any two values, add resistors in series or parallel and estimate kWh cost.
- [Kinematics Calculator (SUVAT) & Projectile Motion](https://hawkinc.store/tools/kinematics-calculator/): Free kinematics calculator: enter any three of s, u, v, a, t to solve SUVAT with steps, or find projectile range, height and time.
- [Molarity, Dilution & pH Calculator](https://hawkinc.store/tools/molarity-calculator/): Free molarity calculator: find grams, volume or concentration, solve C1V1 = C2V2 dilutions and convert pH, pOH, [H+] and [OH−].
- [Chemical Equation Balancer with Element Check](https://hawkinc.store/tools/chemical-equation-balancer/): Free chemical equation balancer for molecular, ionic and redox reactions. Get whole-number coefficients, an atom check and molar masses.
- [Molar Mass Calculator with Percent Composition](https://hawkinc.store/tools/molar-mass-calculator/): Free molar mass calculator: type any formula, including hydrates, to get g/mol, percent composition and grams-to-moles conversions.
- [Matrix Calculator: Determinant, Inverse, Multiply & RREF](https://hawkinc.store/tools/matrix-calculator/): Free matrix calculator: add, subtract and multiply matrices, find the determinant, inverse, transpose, rank, powers and RREF in exact fractions.
- [Set Calculator: Union, Intersection, Complement & Venn Diagram](https://hawkinc.store/tools/set-calculator/): Free set calculator: union, intersection, difference, symmetric difference, complement, power set and Cartesian product, with a Venn diagram.
- [Probability Calculator: Events, Binomial, Normal & nCr](https://hawkinc.store/tools/probability-calculator/): Free probability calculator for two events (and, or, conditional), binomial and normal distributions, z-scores, permutations and combinations, with formulas.
- [Parabola Calculator: Vertex, Focus & Directrix](https://hawkinc.store/tools/parabola-calculator/): Free parabola calculator: find the vertex, focus, directrix, axis of symmetry, latus rectum and intercepts from y = ax² + bx + c or a focus and directrix.
- [Ellipse Calculator: Foci, Eccentricity, Area & Equation](https://hawkinc.store/tools/ellipse-calculator/): Free ellipse calculator: get foci, vertices, eccentricity, area, perimeter, latus rectum and directrices from the axes or general equation, with a graph.
- [Circle Calculator: Area, Circumference & Equation of a Circle](https://hawkinc.store/tools/circle-calculator/): Free circle calculator: find radius, diameter, circumference and area from any one value, plus arc length, sector area, and the equation of a circle with graph.
- [System of Equations Solver (2, 3 or 4 Variables)](https://hawkinc.store/tools/system-of-equations-solver/): Free system of equations solver for 2, 3 or 4 variables. Get exact fraction answers with Cramer’s rule and Gaussian elimination steps, plus no-solution checks.
- [Quadratic Equation Solver with Steps](https://hawkinc.store/tools/quadratic-equation-solver/): Free quadratic equation solver: enter a, b and c to get exact and decimal roots, the discriminant, vertex, factored form and a graph, with every step shown.
- [Trigonometry Calculator: Sin, Cos, Tan & Triangle Solver](https://hawkinc.store/tools/trigonometry-calculator/): Free trigonometry calculator: exact sin, cos, tan values with quadrant and reference angle, plus a right triangle and law of sines/cosines solver with steps.
- [Free Scientific Calculator Online](https://hawkinc.store/tools/scientific-calculator/): Free online scientific calculator with sin, cos, tan, logs, powers, roots, factorials and nCr. Degrees or radians, calculation history, no download or sign-up.
- [Services](https://hawkinc.store/services/): Need help getting your Etsy shop ready to sell? These are the services I offer to Etsy sellers and small online shops. Each one is delivered through Fiverr, so your payment is protected and you get clear packages, revisions and delivery times. Etsy mockup service: realistic product mockups Mockups are the first thing a buyer sees on your Etsy listing, and good ones sell. My Etsy mockup service turns your design files into clean, realistic scenes that help buyers picture owning your product. I run my own Etsy shop, so every image is built to convert. Package What you get Revisions…
- [Etsy Tariff Calculator: US Duty, UK VAT & Etsy Fees](https://hawkinc.store/tools/etsy-fees-vat-tariff-calculator/): Free Etsy tariff calculator: US DDP duty, UK VAT and Etsy fees on orders to US and UK buyers, plus the price to keep your profit.
- [Quran Khatam Planner (Pages Per Day Calculator)](https://hawkinc.store/tools/quran-khatam-planner/): Want to complete the Quran this Ramadan, or by a date that matters to you? Tell the planner which mushaf you read, when you start and when you want to finish. It works out the pages per day, how many pages after each salah, the time needed and a clear day-by-day schedule you can follow, insha’Allah. Your mushafMadani mushaf (604 pages)Indo-Pak 15-line (611 pages)Other (enter pages) Total pages Plan byNumber of daysFinish date Days to finish Finish by Start date Number of khatams123 Pages already read (this khatam) Minutes per page (your pace) Make my khatam plan Advertisement How many pages…
- [Secret Santa Budget Calculator & Name Draw](https://hawkinc.store/tools/secret-santa-budget-calculator/): How much should everyone spend on Secret Santa? Pick your group type and budget comfort, and get a fair spending limit that works for everyone. Then paste the names to draw them instantly, with rules so nobody gets themselves and couples or housemates don’t get each other. GroupOffice / coworkersFriendsFamily (adults)Kids / school classOnline or long-distance group Budget comfortKeep it cheapMiddle of the roadA bit generous Your total holiday gift budget (optional) CurrencyUS$ / CA$ / AU$£ (UK)€ (EUR)Rs (PKR)AED Suggest a budget 🎅 Draw names Names (one per line)Ali Sara Hamza Zainab Omar Aisha Pairs who shouldn’t draw each other…
- [Secret Code Maker for Kids (Caesar, Pigpen, Morse & More)](https://hawkinc.store/tools/secret-code-maker/): Write secret messages like a real spy! Type a message, choose a code, and see it scrambled instantly. Switch to decode to crack a message someone sent you. When you’re ready, print a spy sheet with the coded message and the key, which is perfect for treasure hunts, classroom puzzles and birthday parties. Secret code Caesar shift cipherPigpen cipher (symbols)Morse codeAtbash (A↔Z mirror)Number code (A=1, B=2…)Keyword cipherBackwards writing ModeEncode (make secret)Decode (crack it) Shift amount Keyword Your messageMEET ME AT THE BIG TREE AT NOON Make the codeCopy result🖨 Print spy sheet Advertisement Easy secret codes for kids Code How it…
- [Treasure Map Maker for Kids](https://hawkinc.store/tools/treasure-map-maker/): Planning a treasure hunt? Make a one-of-a-kind treasure map in seconds. Pick a theme, add the young adventurer’s name and your own clues, and hit New map until you love it. Then print it, or save it as an image to send to the party group. Adventurer’s name ThemePirate island 🏴‍☠️Backyard or garden 🏡Birthday party 🎉 Number of stops before the X234 Clues (one per line, optional: leave blank for automatic clues) Make my map🎲 New map⬇ Download PNG🖨 Print Advertisement How to run a treasure hunt with your map Choose the treasure: sweets, a small toy, party favours or a…
- [Weight in Gold Calculator: Are You Worth Your Weight in Gold?](https://hawkinc.store/tools/weight-in-gold-calculator/): Are you really “worth your weight in gold”? Enter your weight and today’s gold (or silver) price and find out, in dollars, rupees or any currency. You’ll also see how many gold bars and coins that is and, oddly, how small a cube of solid gold you’d make. Your weight kglbstone MetalGold (24k)Silver (.999) Price is perTroy ounce (31.1 g)GramTola (11.66 g)Kilogram PriceGold ≈ $4,160/oz on 28 Sep 2026. Update to today’s price. Currency symbol What am I worth? Advertisement How it’s calculated Value = your weight (g) × price per gram Price per gram = price per troy ounce ÷…
- [Odds Comparison Calculator: Is It More Likely Than Being Struck by Lightning?](https://hawkinc.store/tools/odds-comparison-calculator/): Are you more likely to be struck by lightning or win the lottery? Enter any chance as “1 in N” or a percentage and see exactly where it lands on a ladder of famous odds, from rolling double sixes to hitting the Powerball jackpot. You also get the odds of it happening at least once if you try many times. Your event (optional) Enter the odds as1 in NPercentage (%) N (as in “1 in N”) Number of triese.g. tickets bought, rounds played, days …or start from a famous eventChoose one Compare the odds Advertisement How odds and chances convert Odds…
- [Birthday Fun Finder: Golden Birthday, Birth Flower, Birthstone & More](https://hawkinc.store/tools/birthday-fun-finder/): One date, everything fun about it. Enter your birthday to discover your golden and half birthdays, birth flower and birthstone, western and Chinese zodiac, Celtic tree sign, the day of the week you were born, what your birthday is in the Islamic, Hebrew, Chinese and Persian calendars, and even the weather on the day you arrived. Your date of birth First name (optional) Find my birthday facts Weather on the day you were born Town or city where you were born Look up the weather Uses historical weather data from Open-Meteo (records from 1940 onwards). Your city is sent only to…
- [How Many Fit? Jelly Beans in a Jar, Ping Pong Balls & Balloons in a Room](https://hawkinc.store/tools/how-many-fit-calculator/): Win the “guess how many jelly beans are in the jar” contest, or finally answer that classic interview question: how many ping pong balls fit in a room? Pick an object and a container, enter the size, and the calculator uses real packing density (how tightly things settle, gaps included) to estimate the count. What are you filling with? Jelly beansM&M’s (plain)Gumballs (1 inch)Marbles (16 mm)Ping pong ballsGolf ballsTennis ballsBasketballsParty balloons (11″, inflated)Custom sphere… Custom object diameter (cm) Container Room (length × width × height)Round jar (diameter × height)Box (length × width × height)I know the volume Unitfeetinchesmetrescentimetres Length Width Height…
- [How Long Would It Take? Walk Across America, Around the World & More](https://hawkinc.store/tools/how-long-would-it-take/): Ever wondered how long it would take to walk across America, cycle around the whole world or drive the length of the Great Wall of China? Pick a journey (or type your own distance), choose how you travel and how many hours a day, and get the answer in days, steps and pairs of shoes worn out. Switch tabs for the classic “how long to count to a million” question. Choose a challenge A journey on EarthCounting to a number Journey Walk across America: New York → Los Angeles (≈ 4,490 km)Around the world at the equator (40,075 km)Land’s End →…
- [My Life in Numbers Calculator](https://hawkinc.store/tools/my-life-in-numbers/): How many times has your heart beaten? How many times has the Earth turned since you were born? How many summers, weekends and good books are still ahead of you? Enter your birthday and adjust a few habits to see your whole life in numbers. It’s fun, surprising, and a little motivating. Your date of birth Life expectancy to plan with (years)Global average ≈ 73; many countries 78–84. Calculate as of Your habits (change to match you) Resting heart rate (bpm) Breaths per minute Sleep per night (hours) Cups of coffee or tea a day Screen/TV hours a day (leisure) Commute…
- [Spike Recovery Calculator](https://hawkinc.store/tools/spike-recovery-calculator/): Percent recovery for matrix spikes, with dilution correction and AOAC acceptance ranges.
- [HorRat Calculator (Horwitz Ratio)](https://hawkinc.store/tools/horrat-calculator/): Horwitz predicted RSD and HorRat value from your concentration and observed precision.
- [Proficiency Testing Score Calculator (z, z′, ζ, En)](https://hawkinc.store/tools/proficiency-testing-z-score-calculator/): z, z′, zeta and En scores from ISO 13528 with pass/warning/fail verdicts.
- [Westgard Rules Checker & Levey-Jennings Chart](https://hawkinc.store/tools/westgard-rules-calculator/): Plot a Levey-Jennings chart and flag 1-2s, 1-3s, 2-2s, R-4s, 4-1s and 10x violations.
- [LOD & LOQ Calculator](https://hawkinc.store/tools/lod-loq-calculator/): LOD/LOQ from a calibration curve (ICH 3.3σ/S) or blank replicates, including EPA MDL.
- [Measurement Uncertainty Calculator (GUM Budget)](https://hawkinc.store/tools/measurement-uncertainty-calculator/): Free GUM uncertainty budget: Type A/B components, Welch–Satterthwaite and expanded U.
- [SAR Calculator (Sodium Adsorption Ratio)](https://hawkinc.store/tools/sar-calculator/): Sodium adsorption ratio from Na, Ca, Mg with sodium, salinity and infiltration hazard ratings.
- [Well Water Test Results Interpreter](https://hawkinc.store/tools/well-water-test-results/): Compare your well water lab report with EPA limits and get plain-English treatment advice.
- [NPK Fertilizer Blend Calculator](https://hawkinc.store/tools/npk-fertilizer-blend-calculator/): Urea, DAP and potash needed for a target N-P-K rate, or the grade of your own blend.
- [Lawn Soil Test Interpreter (Lime & Fertilizer Calculator)](https://hawkinc.store/tools/soil-test-interpreter/): Lime or sulfur, phosphate, potash and nitrogen plan for your lawn from a soil test report.
- [PFAS Water Test Results & Hazard Index Calculator](https://hawkinc.store/tools/pfas-water-test-calculator/): Check PFOA, PFOS, GenX and other PFAS results against EPA limits and calculate the Hazard Index.
- [Bookbinding & Junk Journal Signature Calculator](https://hawkinc.store/tools/bookbinding-signature-calculator/): Signatures, sheets, blank pages and printing order for handmade books and junk journals.
- [Water Softener Size Calculator](https://hawkinc.store/tools/water-softener-size-calculator/): Grain capacity, recommended softener size and salt use from hardness and household size.
- [Macrame Cord Length Calculator](https://hawkinc.store/tools/macrame-cord-calculator/): Cut length per cord, total cord and spools for wall hangings, plant hangers and more.
- [Leather Calculator – How Much Leather Do I Need?](https://hawkinc.store/tools/leather-calculator/): Square feet of leather for your pattern with waste, the right hide size and fabric-yard conversion.
- [Embroidery Stitch Count Estimator](https://hawkinc.store/tools/embroidery-stitch-count-calculator/): Stitch count, machine time and price from design size, coverage and lettering.
- [Aqiqah Calculator – Date, Animals & Cost](https://hawkinc.store/tools/aqiqah-calculator/): 7th/14th/21st day dates with Hijri date, animals needed, total cost and hair sadaqah.
- [Pak Army / PMA Physical Test Calculator](https://hawkinc.store/tools/pak-army-physical-test-calculator/): Pass/fail check for the PMA and Pak Army initial physical test with training targets.
- [KDP Cover Size & Spine Width Calculator](https://hawkinc.store/tools/kdp-cover-size-calculator/): Paperback spine width, full cover size with bleed and pixels at 300 DPI.
- [Qaza Namaz Calculator – Missed Prayers](https://hawkinc.store/tools/qaza-namaz-calculator/): Count missed prayers (Qaza Umri) including Witr, and plan how long making them up will take.
- [Etsy Fee & Profit Calculator](https://hawkinc.store/tools/etsy-fee-calculator/): Every Etsy fee, profit and margin per sale, plus the price you need for a target profit.
- [Solar System Calculator Pakistan (Size, Cost & Payback)](https://hawkinc.store/tools/solar-system-calculator-pakistan/): kW size, panels, cost, savings and payback from your bill units, with 2026 net billing rates.
- [Etsy Title & Tag Checker](https://hawkinc.store/tools/etsy-tag-checker/): Checks 13 tags, 20-character limits, duplicates, invalid characters and title length.
- [Print Size & DPI Calculator for Printables](https://hawkinc.store/tools/print-size-dpi-calculator/): Pixels for any print size at 300 DPI, the largest print size for an image, and Etsy ratio sets.
- [Shaadi Budget Calculator (Pakistani Wedding)](https://hawkinc.store/tools/shaadi-budget-calculator/): Mehndi, Baraat, Walima and Nikah costs by guests and per-head, plus dresses, jewellery and more.
- [UPS & Inverter Battery Backup Calculator](https://hawkinc.store/tools/ups-battery-backup-calculator/): Backup hours from your battery and load, or the battery size needed for a target time.
- [Water Tank Capacity Calculator (Litres & Gallons)](https://hawkinc.store/tools/water-tank-capacity-calculator/): Litres and gallons for rectangular, round and horizontal tanks, partial fill and days of supply.
- [Islamic Inheritance Calculator (Mirath / Faraid)](https://hawkinc.store/tools/islamic-inheritance-calculator/): Quranic shares for spouse, children, parents and siblings after debts and wasiyyah, with 'awl and radd.
- [Board and Batten Calculator](https://hawkinc.store/tools/board-and-batten-calculator/): Even batten spacing, marking positions, grid rails and boards to buy.

## Optional

- [Agent (MCP protocol)](websites-agents.hostinger.com/hawkinc.store/mcp)

[comment]: # (Generated by Hostinger Tools Plugin)