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

Dec 2, 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, compounding frequency and …

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?

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

Try your calculations with monthly and annual contributions and without them. This savings calculator includes an example rate of return.

This Interest Calculator Web Application helps users compute Simple Interest (SI) and Compound Interest (CI) while also factoring in inflation to understand the real value of their investments.

Input your annual interest rate: Enter the yearly percentage rate. For loans, this is typically the APR; for savings, it's the APY or nominal rate. Set the time period: Specify how long your money will be …

Use our Interest Calculator to determine interest on loans, savings, or investments. Input principal, interest rate, and time to get accurate results for simple or compound interest.

Calculate interest rates effortlessly with this Interest Rate Calculator. Input principal amount, interest rate, time, and compound frequency for accurate results.

This calculator computes the simple interest and end balance of a savings or investment account. It also calculates the other parameters of the simple interest formula.