Compound Interest Calculator
Project your savings growth over time. Enter initial balances, interest rates, term lengths, compounding frequencies, and monthly additions.
Processed locally in your browser — nothing is uploaded.
How to Use
- Enter initial investment and interest rate.
- Set time period and compounding interval.
- Optionally add a monthly contribution amount and click Calculate.
FAQ
What is compound interest?
Compound interest is interest calculated on the initial principal, which also includes all the accumulated interest from previous periods.
How does compound frequency affect returns?
More frequent compounding (e.g., monthly vs. yearly) yields higher returns because interest is earned on interest sooner.