Smart Online Calculators
for Finance, Health & Life
200 free calculators across 10 categories — accurate, fast, and mobile-friendly.
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Featured Calculators
Most used tools across all categories.
Rent vs Buy Calculator
Compare the true cost of renting vs buying a home.
Home Equity Calculator
Calculate your home equity and loan-to-value ratio.
Mortgage Refinance Calculator
See if refinancing your mortgage will save you money.
401k Calculator
Project your 401k balance at retirement with employer matching.
Tax Calculator
Estimate your federal income tax and effective tax rate.
Budget Calculator
Build a monthly budget and see where your money goes.
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Free Online Calculators for Every Need
MyDailyCalculator provides 200 free online calculators across 10 categories covering financial planning, health metrics, mathematical computations, unit conversions, business analytics, date and time calculations, science, nutrition, education tools, and everyday lifestyle calculations.
Our financial calculators cover everything from mortgages and loans to retirement planning, net worth tracking, and investment analysis. The health calculators use established medical formulas for BMI, TDEE, body fat, and more.
Businesses will find our business calculators invaluable for profit margins, break-even analysis, and cash flow planning. Students can use our education calculators for GPA, grades, and study planning. New science calculators cover physics formulas from Ohm's law to gravitational force.