Free Money Calculators
Mortgage, debt payoff, salary, retirement and everyday math — instant answers, no signup, works on any device.
Loans & Mortgage
Debt Payoff
Savings & Investing
Salary & Income
Life & Spending
Calculators run entirely in your browser — your numbers never leave the device. (Exceptions: the state tax and IBAN bank-lookup tools fetch live 2026 data from their APIs.) Bookmark what you need; the collection grows. See the open formula dataset for the exact math behind every tool.
Frequently asked questions
Are these calculators free?
Yes — every tool on MoneyCalcs is free, runs instantly in your browser, and needs no signup, app or download.
Do my numbers leave my device?
No. All math runs locally in your browser; nothing is sent anywhere. The only exceptions are the state income tax and IBAN tools, which fetch public 2026 rate/bank data from their APIs — never your inputs.
How accurate are the results?
Formulas use standard 2026 rules (amortization, compound interest, effective tax rates). Results are estimates for planning, not financial or tax advice — confirm big decisions with a professional.