Free Financial Calculators
Fast, private calculators that run entirely in your browser — your numbers never leave your device. Every page shows the exact formula.
Compound InterestSee how a lump sum plus regular monthly contributions grows with compound intere…Loan PaymentEnter a loan amount, annual rate and term to get the fixed monthly payment, tota…Mortgage PaymentA mortgage payment is more than principal and interest. Add tax, insurance and H…Savings GoalHave a target and a deadline? This tells you the exact monthly contribution need…Credit Card PayoffFixed monthly payments on credit card debt: see exactly how many months until yo…InflationInflation quietly shrinks purchasing power. Enter an amount, an average inflatio…ROISimple ROI tells you how much you made; annualized ROI tells you how fast — and …Retirement SavingsProject your nest egg at retirement from what you have, what you add each month …
No signup. No data collection. Just math.
Every calculator on CalcFin runs locally using JavaScript — your inputs are processed on your own device and never sent to any server. Each page also documents the exact formula used, so you can verify the math instead of trusting a black box.
Results are estimates for planning and education, not financial advice.