Free Online Calculators

Fast, accurate, and easy-to-use calculators for finance, tax, health, math, and more.

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Compound interest, mortgage, loan, and investment calculators

Income tax, payroll, 1099, and self-employment calculators

BMI, calorie, BMR, and body fat calculators

Percentage, fraction, and scientific calculators

Unit, currency, and measurement converters

Calculate how your investments grow over time

Estimate your monthly mortgage payments

Calculate your Body Mass Index

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Instant calculations with no sign-up required

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Reliable formulas used by professionals

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Works perfectly on any device