Compounding Calculator
Calculate the future value of an investment with compound interest. Supports different compounding frequencies and shows growth over time.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator computes the future value of an investment with compound interest and optional periodic contributions.
- Initial Investment: Enter the starting amount (e.g., $1,000). Must be a positive number.
- Annual Interest Rate (%): Enter the yearly interest rate (e.g., 5 for 5%). Must be a positive number.
- Time Period (Years): Enter the total number of years (e.g., 10). Must be a whole number ≥ 1.
- Compounding Frequency: Select how often interest compounds (e.g., Monthly, Quarterly, Daily).
- Additional Contribution (per period): Enter the amount added each compounding period (e.g., $100). Use 0 for no contributions.
- Click Calculate to see results.
Results:
- Future Value: Total value of the investment at the end.
- Total Contributions: Sum of initial investment plus all periodic contributions.
- Total Interest Earned: Future Value minus Total Contributions.
Note: All monetary values are in USD. Ensure inputs are positive numbers. The formula accounts for compounding frequency automatically.
Previous Results
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Frequently Asked Questions
Compound interest is interest calculated on the initial principal and also on the accumulated interest from previous periods. It allows your investment to grow faster than simple interest.
The more frequently interest is compounded, the higher the future value. For example, daily compounding yields slightly more than monthly compounding at the same interest rate.
This calculator is designed for investments. For loans, you would typically use an amortization calculator. However, the formula is similar if you consider the loan balance as the initial investment.
