Compound Interest Calculator

Estimate compound growth from principal, rate, time, and frequency.

Compound Interest Calculator
Local input
Output
Processing…
About this tool

Made for the task at hand.

Apply the standard periodic compounding formula to four explicit inputs. Results are mathematical estimates, not financial advice or a forecast.

How to use

  1. Enter principal, annual rate percent, years, and compounds per year on four lines.
  2. Check that frequency is a positive whole number.
  3. Review final amount, interest earned, and growth percentage.
Your work stays yours.
Tool inputs are processed locally in your browser and are never sent to KitVerse servers. Clear the workspace when using a shared device.
Common questions
Which formula is used?

A = P(1 + r/n)^(nt), where r is the decimal annual rate, n the compounding frequency, and t years.

Are deposits, fees, or taxes included?

No. This calculates one initial principal with compound growth only; contributions and real-world charges are excluded.