Finance

Compound Interest Calculator

Calculate compound interest growth over time with different compounding periods

$
$
%
yrs
Future Value
$0
Total contributions $0
Total interest earned $0
Return on investment 0%
How to Use
  1. Enter your Initial Investment (lump sum).
  2. Add a Monthly Contribution if you plan to contribute regularly.
  3. Set the Annual Interest Rate (e.g., 7% for stock market average).
  4. Choose the Time Period in years.
  5. Select how often interest is compounded (daily, monthly, annually).

Formula

A = P(1 + r/n)^(nt) + PMT × [(1 + r/n)^(nt) − 1] / (r/n)
A Future value (ending balance)
P Principal (initial investment)
r Annual interest rate (decimal)
n Compounding frequency per year
t Time in years
PMT Regular payment (monthly contribution)