Compound Interest Calculator 計算機

この計算機は扱います: Project future value and interest earned from principal, annual rate, time, and compounding frequency.

Finance 更新 2026-05-11

入力

Principal ($) Annual rate (%) Years Compounds per year

Future value ($) 値を入力して計算します。

Interest earned ($) 値を入力して計算します。

future value = principal x (1 + rate / compounds)^compounds x years.

この計算機は扱います: Project future value and interest earned from principal, annual rate, time, and compounding frequency.

5000 at 5% compounded monthly for 10 years grows to about 8235.05.

More frequent compounding helps, but rate and time usually matter more.

Do not treat this as an investment guarantee.

What inputs does this calculator need?

Principal, Annual rate, Years, Compounds per year.

How should I round the result?

Keep extra digits while comparing values, then round for the final decision or report.

Can I reuse the result in another calculation?

Yes, but preserve the original inputs and units so the next calculation stays traceable.