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Tools & calculators.

Five calculators for the numbers that come up most: returns, mortgages, loans, compounding, and taxes. Enter your figures and the result updates in place.

ROI calculator

Return on investment from total gain and total cost, so you can compare projects on one number.

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Mortgage calculator

Estimated monthly principal-and-interest payment from loan amount, rate, and term.

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Loan calculator

Monthly payment, total repaid, and total interest across any loan term.

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Compound interest calculator

Future balance and interest earned at any compounding frequency, with a year-by-year growth chart.

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Tax estimator

Federal, state, and FICA taxes with standard or itemized deductions and the child tax credit.

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Every calculator runs in your browser. Nothing you type is sent to a server or stored.

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