May 28, 2026 · 4 min read
Compound Interest Calculator (Free, No Signup Required)
See how your savings grow with monthly compounding and any contribution schedule. No login, no email, instant results.
Advertisement
The earlier you start investing, the more compounding does the heavy lifting. A single $10k deposit at 7% for 30 years becomes ~$76k — without adding a cent.
The formula
A = P(1 + r/n)^(nt). P = principal, r = annual rate, n = compounds per year, t = years.
Use Compound Interest Calculator to run any scenario.
Compare with simple interest
For short-term loans or basic deposits, Simple Interest Calculator is faster. For investments, ROI Calculator compares two scenarios.
Advertisement