Finance & Money

Compound Interest Calculator

Future value with periodic compounding.

P ($) Annual rate (decimal e.g. 0.05) Years Compounds/year

Educational estimates only. Not medical, legal, tax, or financial advice.

Guide: Compound Interest Calculator

Projects account balance over time when interest compounds at a set rate and frequency.

Enter principal, annual rate, years, and compounding periods per year, then calculate.

A = P(1 + r/n)^(nt) for periodic compounding; continuous variants use e^(rt).

$10,000 at 5% annual compounded monthly for 10 years grows to roughly $16,470 (rounded).

What does “compounding monthly” mean?

Interest is credited 12 times per year and earns interest thereafter.

Is this what my bank pays?

Real accounts have fees, taxes, and variable rates—use this as a model, not a guarantee.

Does it include inflation?

No. For purchasing power, compare with a separate inflation model.