Calculate
Compound Interest Calculator
Enter the principal, annual rate, time, and how often interest compounds to see the future value and total interest earned. Calculated locally.
Details
LocalResult
FAQ
Common questions
A = P(1 + r/n)^(n·t), where P is principal, r is the annual rate, n is compounds per year, and t is years.
Annually, semi-annually, quarterly, monthly, and daily.
The future value minus the original principal — interest earned on both principal and previously accrued interest.
No. All calculation happens in your browser.
Private by design
This runs entirely in your browser
No file or text you enter here is uploaded. Encoding and decoding happen on your device using native browser APIs — close the tab and nothing remains on a server.