Test your knowledge of compound interest, the Rule of 72, and related investing concepts in our most popular investing quiz! There’s a trick question – can you spot it?

Oct 31, 2025 · If you'd prefer not to do the math manually, you can use the compound interest calculator at the top of our page. Simply enter your principal amount, interest rate, …

Free compound interest calculator to find the interest, final balance, and schedule using either a fixed initial investment and/or periodic contributions.

Aug 1, 2025 · Calculate compound interest on an investment, 401K or savings account with annual, quarterly, daily or continuous compounding. The calculator computes compound …

Compounding interest calculator: Use this calculator to determine how much your money can grow with compound interest.

Calculate investment growth precisely using the compound interest formula with key parameters. Get real-time results quickly to make informed financial decisions.

Use this calculator to easily calculate the compound interest and the total future value of a deposit based on an initial principal.

See How Finance Works for the compound interest formula, (or the advanced formula with annual additions), as well as a calculator for periodic and continuous compounding.

Use our compound interest calculator to see how your savings can grow over time. Calculate returns with different contribution amounts, interest rates, and compounding frequencies.

3 days ago · Our compound interest calculator shows exactly how your savings or debt will grow. Enter your starting amount, contributions and rate of return to see how different timeframes …