Inputs used in this example
Annual return rate (%)8
This example page shows how rule of 72 calculator works when the annual return rate is set to $8. You can use it as a starting point before testing your own assumptions.
If this calculator is new to you, use these values as a starting point. See how the result is produced, then adjust the numbers to match your own situation.
If these numbers are close to your situation, use the result as a reference and then run the calculator with your own values. Select "Open calculator" below to make the comparison.
Try a slightly different scenario to see how the result moves — useful for narrowing in on the values closest to your situation.