Calculators

Browse our collection of free online calculators for health & fitness, finance & money, everyday life, and industry niches.

Finance & Money

Overtime pay, bill splitting, budgeting, and other financial calculators.

Health & Fitness

Body composition, hydration, calories, and fitness metrics.

Everyday Life

Age, percentage, inches to feet, date difference tools, and more.

Industry Niches

Specialized calculators for construction, brewing, agriculture, and other trades. Coming soon.

All Calculators

Overtime Pay Calculator Finance & Payroll Calculate overtime pay beyond your normal working hours. Split Bills Fairly Calculator Finance & Group Utilities Quickly and fairly figure out how much each person owes for group expenses. Tip Calculator Finance & Money Calculate your tip, split the bill, and round to a clean total. Sales Tax Calculator Finance & Money Add tax, reverse a total, or find the rate. All 50 state rates included. Rent Affordability Calculator Finance & Money How much rent you can afford by salary, with full expense breakdown. Take-Home Pay Calculator Finance & Money Net pay after federal, FICA, and state taxes for 2026. Age Calculator Everyday Life Exact age + zodiac, generation, birthstone, and birthday countdown. Percentage Increase Calculator Everyday Life Three modes for finding %, applying %, or reversing %. Plus salary and price tables. Inches to Feet Calculator Everyday Life Convert with feet-and-inches output, plus a complete height chart. Liters to Gallons Calculator Everyday Life Two-way converter with reference charts and common volume benchmarks. Salary to Hourly Calculator Finance & Money All 7 pay period equivalents at once. Plus a "true hourly rate" breakdown. Water Intake Calculator Health & Fitness Personalized daily target with a drinking schedule, not just a number. Body Fat Percentage Calculator Health & Fitness US Navy or BMI method. Includes lean body mass and goal weight. Gematria Calculator Numbers & Language Hebrew, Greek, and English values from one input, with seven counting methods. Greek Gematria Calculator Numbers & Language Isopsephy values with final forms, archaic letters, and reverse lookup. Scale Factor Calculator Drafting & Design Scale between two lengths, with area and volume scaling and model scales. Degrees Minutes Seconds Calculator Maps & Navigation DMS to decimal degrees and back, with DDM, hemisphere signs, and DMS arithmetic.