How the math works
A = P(1+r/n)^(nt) plus future value of regular contributions.
Example
- Enter a starting amount.
- Add an annual rate and years.
- Optionally add a monthly contribution.
Catch the catches
- Small rates look dramatic over long horizons. Use conservative numbers.
Questions
Are these calculators free?
Yes. They run in your browser. You do not need an account, and we do not require personal financial data to use them.
Should I treat the result as a bank or store quote?
No. Results are educational math. Merchants, lenders, and tax rules can differ. Verify the live terms before you pay.