Money calculators
Free calculators for everyday money questions in the USA — savings and investment growth, loan repayments, mortgage payments, sales tax, and percentages. Each calculator gives a clear result with a plain-English explanation of what the number means.
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Compound Interest Calculator
Estimate how your savings, investment account, 401(k), or retirement fund could grow over time.
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Loan Repayment Calculator
Work out your monthly payment on a personal loan, auto loan, or debt consolidation — and see how paying a little extra each month saves interest.
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Mortgage Payment Calculator
Calculate your monthly mortgage payment with optional taxes, insurance, and PMI (PITI). See your total interest, LTV, and how overpaying can shorten your loan.
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Percentage Calculator
Quickly work out a tip, a discount, a price change, or a markup — five percentage tools on one page.
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Reverse Sales Tax Calculator
Got a tax-inclusive price? Work backwards to find the pre-tax amount and the sales tax — at any state-and-local rate.
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Sales Tax Calculator
Add sales tax to a price, or work out the pre-tax amount from a tax-inclusive total — at any state-and-local rate.