Compound Interest Calculator
See how one starting amount changes over time at a hypothetical annual rate, including losses.
See how one amount compounds
Enter a starting amount, a time horizon, and a hypothetical rate.
Updates as you typeYour numbers
Start with the example. Change it to fit your plan.
Amount in US dollars.
Amount in years.
Enter a negative rate to see a loss scenario. Values in percent.
Assumptions
The annual rate is hypothetical and effective. Growth is credited monthly to the cent; deposits arrive at month end. Taxes, fees, withdrawals, inflation and changing returns are excluded. Returns are not guaranteed and losses are possible.
Educational information, not investment advice.
Your result
Balance over time
- At your assumed rate
- At 0% return
View chart values
| Time | At your assumed rate | At 0% return |
|---|---|---|
| 0 yr | $1,000 | $1,000 |
| 0 yr 5 mo | $1,024.58 | $1,000 |
| 0 yr 10 mo | $1,049.77 | $1,000 |
| 1 yr 3 mo | $1,075.56 | $1,000 |
| 1 yr 8 mo | $1,102 | $1,000 |
| 2 yr 1 mo | $1,129.08 | $1,000 |
| 2 yr 6 mo | $1,156.83 | $1,000 |
| 2 yr 11 mo | $1,185.26 | $1,000 |
| 3 yr 4 mo | $1,214.39 | $1,000 |
| 3 yr 9 mo | $1,244.24 | $1,000 |
| 4 yr 2 mo | $1,274.84 | $1,000 |
| 4 yr 7 mo | $1,306.19 | $1,000 |
| 5 yr | $1,338.29 | $1,000 |
| 5 yr 5 mo | $1,371.18 | $1,000 |
| 5 yr 10 mo | $1,404.88 | $1,000 |
| 6 yr 3 mo | $1,439.41 | $1,000 |
| 6 yr 8 mo | $1,474.78 | $1,000 |
| 7 yr 1 mo | $1,511.02 | $1,000 |
| 7 yr 6 mo | $1,548.15 | $1,000 |
| 7 yr 11 mo | $1,586.20 | $1,000 |
| 8 yr 4 mo | $1,625.18 | $1,000 |
| 8 yr 9 mo | $1,665.13 | $1,000 |
| 9 yr 2 mo | $1,706.04 | $1,000 |
| 9 yr 7 mo | $1,747.97 | $1,000 |
| 10 yr | $1,790.93 | $1,000 |
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Results are educational estimates from your inputs and the assumptions shown, rather than a guarantee or individual financial advice. About our estimates.