Compound Interest Calculator
Calculate compound interest with monthly, quarterly, half-yearly, or yearly compounding. See maturity amount, total interest earned, and year-by-year growth breakdown. Free, no sign-up.
How to Use
Enter principal amount
Type the initial investment or deposit amount.
Set interest rate
Enter the annual interest rate offered by your bank or investment.
Choose time period
Select how many years you plan to keep the investment.
Select compounding frequency
Choose how often interest is compounded — monthly, quarterly, half-yearly, or yearly.
View results instantly
See your maturity amount, total interest earned, and a year-by-year growth breakdown.
Features
Multiple Compounding Options
Compare monthly, quarterly, half-yearly, and yearly compounding frequencies.
Year-by-Year Growth
See how your investment grows each year with opening balance, interest, and closing balance.
Visual Breakdown
Visualize the split between your principal and earned interest at a glance.
Copy & Share
Copy any result with one click. Share your calculation with others.
Frequently Asked Questions
Recommended Reading
Practical guides matched to this calculator, its inputs, and the result users need to trust.