Compound Interest Calculator
Project compound growth over time with selectable compounding frequency.
Results are provided for general informational use. Verify important financial, health or legal figures before relying on them.
About this Compound Interest Calculator
The Compound Interest Calculator estimates how an initial principal grows when interest is periodically added to the balance. You can choose annual, quarterly, monthly or daily compounding to compare how compounding frequency affects the ending amount.
For related tasks, try Simple Interest Calculator, Loan EMI Calculator or Investment Return Calculator.
How to use it
- Enter the starting principal and annual interest rate.
- Enter the number of years and compounding frequency.
- Calculate the final balance and total interest earned.
Practical example
With 10,000 invested at 7% for 10 years and compounded monthly, each month adds a small amount of interest to a growing balance, so later interest is earned on earlier interest.
Frequently asked questions
What is compound interest?
It is interest calculated on the principal plus previously accumulated interest.
Does this include regular contributions?
No. This version models a single starting principal without additional deposits.
Is the annual rate converted for each period?
Yes. The annual rate is divided by the selected number of compounding periods per year.
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