Free Online Calculators

200+ tools for finance, health, math and more — fast, accurate, always free

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Financial Calculators

19 tools available

Mortgage Calculator

Estimate monthly mortgage payments, total interest, and amortization schedule.

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Loan Calculator

Calculate monthly payments and total cost for any personal or business loan.

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Auto Loan Calculator

Find out your monthly car payment and total interest for any auto loan.

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Interest Calculator

Compute simple or compound interest on savings, loans, and investments.

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Payment Calculator

Determine the monthly payment required to pay off any debt or loan.

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Retirement Calculator

Project your retirement savings and estimate how long your money will last.

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Amortization Calculator

Generate a full amortization schedule showing principal and interest over time.

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Investment Calculator

Forecast the future value of your investments with compound growth.

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Inflation Calculator

Adjust dollar amounts for inflation and compare purchasing power over time.

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Finance Calculator

Solve for any time-value-of-money variable: PV, FV, rate, or periods.

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Income Tax Calculator

Estimate your U.S. federal income tax refund or amount owed for 2025/2026.

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Compound Interest Calculator

See how compound interest grows your savings or increases your debt over time.

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Salary Calculator

Convert between hourly, weekly, monthly, and annual salary figures.

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Interest Rate Calculator

Back-calculate the interest rate from known loan terms and payment amounts.

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Sales Tax Calculator

Quickly add or remove sales tax from any price for any U.S. state.

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Tip Calculator

Calculate tip amount and split the bill evenly among multiple people.

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Discount Calculator

Find discounted price, savings amount, or original price from any two values.

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Lease Calculator

Calculate monthly car lease payments based on MSRP, residual value, and money factor.

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Break-Even Calculator

Find the break-even point in units and revenue for your business or product.

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