Compound interest calculator
Estimate growth with regular contributions and compounding.
Compound interest calculator
Your result appears here
Adjust the values to see your result automatically.
How to use Compound interest calculator
- Adjust the values; an initial result is calculated from the defaults.
- Change the basic settings or open Advanced mode to fine-tune the result.
- Review and copy or download your result. Pause Live results to run manually. Sources or individual settings above 20,000 characters require an explicit run.
What this tool supports
Separates money you contribute from interest earned. Contributions are deposited at the end of each compounding period. The annual rate is divided by the number of compounds per year.
- Initial balance
- Range: 0 to no maximum
- Annual rate (%)
- Range: 0 to 100
- Years
- Range: 0 to 100
- Compounds per year
- Range: 1 to 365
- Contribution per period (end)
- Range: 0 to no maximum
Limits and processing
Use finite numbers, valid dates and the ranges shown by each control. Invalid values produce an error without a downloadable result.
Frequently asked questions
What does compound interest calculator do?
Separates money you contribute from interest earned. Contributions are deposited at the end of each compounding period. The annual rate is divided by the number of compounds per year.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
Use finite numbers, valid dates and the ranges shown by each control. Invalid values produce an error without a downloadable result.