Tool capabilities
- Input
- Options
- Output
- Options
How to use Compound Interest
Explore growth with compounding and regular contributions. This compound interest works directly in your browser and is free to use without an account.
- Enter the values in the labeled fields using consistent units.
- Read the calculated result, supporting values and formula.
- Adjust an input to compare another scenario or copy the result.
Compound Interest · Example
Input
Starting amount: 10000 Annual interest (%): 5 Years: 10 Compounds per year: 12 Contribution per compounding period (end of period): 100
Output
Future balance: 31998.32292146952 Total contributed: 22000 Interest earned: 9998.32292146952
Formula: P(1 + r/n)^(nt) + C[((1 + r/n)^(nt) − 1)/(r/n)]
Usage notes
Inputs and results are processed on this device. Tool content is not sent to a processing server.
Calculations use the displayed assumptions and ordinary floating-point arithmetic. Rounding may affect the last displayed digits.