Stepwell Financial

Stepwell Financial offers money education and free tools. Its calculators show their working, and its plain-English guides explain how interest works, with worked examples you can check yourself. Each calculator and guide says what its numbers assume, so you can see where they come from. The calculators include our compound interest calculator.

Stepwell Financial gives education and tools, not personal advice.

Calculators

• Compound interest calculator See how a balance could grow with monthly deposits, compared with simple interest, year by year.
• APY calculator Turn an interest rate into an APY for different compounding schedules, or back again.
• Compound interest calculator with inflation See a balance in today's dollars, at an example inflation rate you choose.
• Savings calculator See how savings could grow at a fixed example APY, or how long a goal could take.
• Rule of 72 calculator Estimate how long money takes to double at a fixed example rate, next to the exact answer.

Guides

• Compound interest formula The formula explained letter by letter, with worked examples you can check.