Compound Interest Calculator
Calculate compound interest and visualize your investment growth over time.
Final Amount
$16,470.09
Total Interest
$6,470.09
Growth Over Time
How to Use Compound Interest Calculator
Step 1
Enter the initial principal amount.
Step 2
Set the annual interest rate as a percentage.
Step 3
Choose the compounding frequency (monthly, quarterly, or yearly).
Step 4
Enter the time period in years and view the results.
Features
Accurate compound interest calculation using standard formula.
Supports monthly, quarterly, and yearly compounding.
Shows final amount and total interest earned.
Visual bar chart showing year-by-year growth.
Completely free with no data sent to any server.
FAQ
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. This means your money grows exponentially over time rather than linearly.
A = P(1 + r/n)^(nt), where A is the final amount, P is the principal, r is the annual interest rate (decimal), n is the number of times interest compounds per year, and t is the time in years.
You can choose monthly (12 times/year), quarterly (4 times/year), or yearly (1 time/year) compounding.
Yes, the compound interest calculator is completely free and runs entirely in your browser with no data sent to any server.