Free Financial Calculators
A growing collection of accurate, no-signup calculators that run entirely in your browser. Pick the one that fits your question.
Compound Interest Calculator
Project investment growth with an initial deposit, monthly contributions (SIP), and adjustable compounding frequency. Includes interactive chart and shareable results.
Open calculator →Simple Interest Calculator
Calculate interest using the classic I = P × r × t formula. Useful for short-term loans, T-bills, and bonds where interest doesn't compound.
Loan / Mortgage Calculator
Find your monthly payment, total interest paid, and full amortization schedule for any fixed-rate loan or mortgage. See exactly where each dollar goes.
Open calculator →Savings Goal Calculator
You have a target — how much do you need to save each month to hit it? Solve for monthly contribution given goal, time horizon, and expected return.
Open calculator →How to choose the right calculator
If you're saving or investing money and earning interest on top of interest, use the Compound Interest Calculator. This is the right tool for retirement accounts, index funds, dividend reinvestment, or any long-term savings plan.
If interest is paid out instead of being added back to the principal — for example a short-term bond, certificate of deposit with simple-interest terms, or a friendly personal loan — use the Simple Interest Calculator.
If you're borrowing money instead of investing it, use the Loan Calculator. It produces the standard monthly payment and a full amortization table showing how much of each payment is interest versus principal.
If you have a fixed dollar target (a down payment, an emergency fund, your child's college) and want to back-solve for the monthly contribution that gets you there, use the Savings Goal Calculator.
What's coming next
We're working on a retirement calculator, an inflation-adjusted return calculator, and an ROI calculator. Check back, or drop us a line if you have a specific request.