Formula Sheets
One printable sheet per category. Each sheet collects the formulas behind every calculator in that hub, typeset and ready to print.
Build a sheet — pick academic groups and print as many pages as you needBusiness formulas
One printable sheet for 7 Business tools — formulas collected from each calculator’s How it works.
Open sheet → ChemistryChemistry formulas
One printable sheet for 4 Chemistry tools — formulas collected from each calculator’s How it works.
Open sheet → ConstructionConstruction formulas
One printable sheet for 22 Construction tools — formulas collected from each calculator’s How it works.
Open sheet → ConvertersConverters formulas
One printable sheet for 19 Converters tools — formulas collected from each calculator’s How it works.
Open sheet → CookingCooking formulas
One printable sheet for 10 Cooking tools — formulas collected from each calculator’s How it works.
Open sheet → CryptographyCryptography formulas
One printable sheet for 1 Cryptography tool — formulas collected from each calculator’s How it works.
Open sheet → Date TimeDate Time formulas
One printable sheet for 19 Date Time tools — formulas collected from each calculator’s How it works.
Open sheet → DesignDesign formulas
One printable sheet for 6 Design tools — formulas collected from each calculator’s How it works.
Open sheet → EducationEducation formulas
One printable sheet for 6 Education tools — formulas collected from each calculator’s How it works.
Open sheet → EverydayEveryday formulas
One printable sheet for 5 Everyday tools — formulas collected from each calculator’s How it works.
Open sheet → FinanceFinance formulas
One printable sheet for 32 Finance tools — formulas collected from each calculator’s How it works.
Open sheet → FitnessFitness formulas
One printable sheet for 14 Fitness tools — formulas collected from each calculator’s How it works.
Open sheet → GeometryGeometry formulas
One printable sheet for 57 Geometry tools — formulas collected from each calculator’s How it works.
Open sheet → HomeHome formulas
One printable sheet for 5 Home tools — formulas collected from each calculator’s How it works.
Open sheet → MathMath formulas
One printable sheet for 139 Math tools — formulas collected from each calculator’s How it works.
Open sheet → OtherOther formulas
One printable sheet for 12 Other tools — formulas collected from each calculator’s How it works.
Open sheet → Personal FinancePersonal Finance formulas
One printable sheet for 13 Personal Finance tools — formulas collected from each calculator’s How it works.
Open sheet → PhysicsPhysics formulas
One printable sheet for 50 Physics tools — formulas collected from each calculator’s How it works.
Open sheet → SalesSales formulas
Printable sales formulas for checkout and pricing: tip and discount percentages, line totals with tax, markup and margin, commission, and related identities pulled from each Sales calculator’s How it works. Use the sheet to review the algebra; open a tool when you need numbers.
Open sheet → StatisticsStatistics formulas
One printable sheet for 11 Statistics tools — formulas collected from each calculator’s How it works.
Open sheet → TimeTime formulas
A short printable sheet for the Time tools — the stopwatch lap-style elapsed-time helpers and the exam countdown identities shown beside those calculators. For calendar math (days, age, date offsets), use the Date Time formula sheet and calculators instead.
Open sheet → TravelTravel formulas
One printable sheet for 5 Travel tools — formulas collected from each calculator’s How it works.
Open sheet → UnitsUnits formulas
Printable companion to the multi-family Unit Converter: the proportional base-unit scaling identity and the Celsius–Fahrenheit–Kelvin maps from that tool’s How it works. Dedicated length, mass, or temperature converter pages share the same conversion idea in a single-family UI.
Open sheet → WeatherWeather formulas
One printable sheet for 2 Weather tools — formulas collected from each calculator’s How it works.
Open sheet →