Compound Interest Calculator

Future value estimates.

Theme

Private by design: This tool runs in your browser — your data is not uploaded.

For information only — not financial advice.

How to use Compound Interest Calculator

$10,000 at 5% annual interest compounded monthly for 10 years grows to about $16,470 — roughly $6,470 in interest earned.

Step-by-step

  1. Enter starting principal.
  2. Set annual interest rate and number of years.
  3. Choose how often interest compounds.
  4. Calculate future value and interest earned.

Common questions

What compound frequency should I pick?
Monthly is common for savings accounts; annually is simpler for rough estimates.
Is this financial advice?
No. Results are estimates for planning only — not investment advice.

Last updated: 2026-06-03