Interactive Compound Interest Calculator Tool

“Compound interest is the eighth wonder of the world.

He who understands it, earns it. He who doesn't, pays it.”

- Albert Einstein

Compound interest is so powerful, that millions of people count on it for their investments and retirements. It is a financial pillar that banks and businesses rely on.

Just how powerful is it? Below is a fun and interactive Compound Interest Calculator Tool we built to help you witness its awesome power at your fingertips.

Chose an amount to invest, a length of time, and an interest rate. (Sample rates are listed below.)


Then click to calculate the total compounded interest, to see the amazing value of investing early in life!

Realistic sample interest rates are: 

  • 0-1.5% -  for a traditional bank savings account

  • 8% - The average amount earned through the stock market

  • 12% - Some higher risk investments can yield high rates of return

  • 20% - The amount investors hope to get when investing in a startup business

We've based our calculations on retiring at age 70. 


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