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Free Calculators for United States

Free calculators for USA — Mortgage, Income Tax, 401k, Sales Tax, and more with IRS tax brackets. All calculations use USD ($) and United States-specific tax rules.

5 calculators available

Finance

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finance

US Income Tax Calculator

Calculate your US federal income tax with 2025 tax brackets.

finance

US Mortgage Calculator

Calculate your monthly mortgage payment, total interest, and amortization schedule.

finance

Sales Tax Calculator

Calculate sales tax amount and total price for any US state.

Math

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math

Compound Interest Calculator

Calculate compound interest with different compounding frequencies.

Health

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health

BMI Calculator

Calculate your BMI using pounds and feet/inches.