Compound Interest

Calculate how your investments grow over time with the power of compound interest

Investment Details

$
$
%

Future Value

$0

After 10 years

Total Contributions
$0
Total Interest Earned
$0

Growth Over Time

Year-by-Year Breakdown

Year Contributions Interest Balance

See Your Growth Plan

Turn this calculation into a real investment plan. See projections, set milestones, and track progress.

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What is Compound Interest?

Compound interest is the interest calculated on both the initial principal and the accumulated interest from previous periods. It's often called "interest on interest" and can significantly accelerate the growth of your investments over time.

The Formula

The compound interest formula used in this calculator is:

FV = P(1 + r/n)nt + PMT × [((1 + r/n)nt - 1) / (r/n)]

Where: P = Principal, r = Annual rate, n = Compounding frequency, t = Years, PMT = Monthly contribution

The Power of Starting Early

Due to compound interest, starting to invest early can make a dramatic difference. Even small amounts invested consistently over a long period can grow substantially more than larger amounts invested over a shorter period.