Financial calculator
Compound Interest Calculator
Compound interest is interest earned on both your original investment and the interest it has already accumulated. Use this calculator to estimate how your savings could grow over time.
Calculate your investment growth
Your results
- Final balance
- $0.00
- Total contributions
- $0.00
- Total interest earned
- $0.00
Frequently asked questions
What is compound interest?
Compound interest is calculated on your starting balance plus any interest previously earned, allowing growth to build on itself.
How often should interest be compounded?
More frequent compounding generally produces a slightly higher balance when the annual rate and all other inputs are the same.
How do monthly contributions affect growth?
Regular contributions increase the amount earning interest. Starting early gives each contribution more time to compound.
Does this calculator account for taxes or fees?
No. The estimate does not include investment fees, taxes, inflation, or changes in the interest rate.
Is the calculated return guaranteed?
No. This calculator provides an estimate based on a fixed annual rate. Actual investment returns can rise or fall over time.