∿FINANCE
Compound Interest Calculator
See how a lump sum can grow over time when interest is compounded at regular intervals.
Enter your values
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Formula
The standard compound-interest model applies the rate repeatedly over each compounding period.
A = P × (1 + r ÷ n)⁽ⁿᵗ⁾
How it works
1
Enter the starting amount.
2
Enter the annual rate and time period.
3
Choose the compounding frequency and compare final amount with total interest earned.
Important notes
This tool models a fixed rate and fixed compounding schedule. Real accounts may use different conventions, rates, deposits or fees.