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 →Return on Investment Calculator
Calculate your return on investment (ROI) easily. Free ROI calculator to measure profit and investment performance.
Open calculator →Compound Annual Growth Rate Calculator
CAGR (Compound Annual Growth Rate) represents the average annual growth rate of an investment over a period of time.
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.
If you need to evaluate the financial viability of a potential decision, compare competing options, or prove the value of a past initiative, use the ROI Calculator.
If you want to find the steady annual rate of return required for an investment to grow from its starting balance to its ending balance, assuming profits were reinvested at the end of each period, use the CAGR Calculator.
What's coming next
We're working on a retirement calculator, an inflation-adjusted return calculator, and much more. Check back, or drop us a line if you have a specific request.