Compound interest
See how much your savings can grow if you add a little each month. The chart separates what you put in from what your interest earns.
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You'll have
What you put in
What your interest earned
0
Estimate with a fixed return and monthly compounding. Real investments go up and down; this is not investment advice.
How to use it
- Type your starting amount and monthly contribution.
- Adjust the annual return and the years.
- Check the total and the chart: the mint part is money you did not put in.
FAQ
What is compound interest?
Earning interest on the interest you already earned. That is why growth speeds up over the years.
What return should I use?
It depends where you invest. Savings accounts pay little; stock funds have historically paid more, with ups and downs. Not a promise.
Why does starting early matter so much?
Because time multiplies the most. Try 10 years and 30: almost all the difference is interest.
Is this investment advice?
No. It is a calculator to understand how it works.
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