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.

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.