Money · FREE CALCULATOR
Compound Interest Calculator
Explore hypothetical account growth with monthly deposits and compounding. Change the sample numbers to get an instant estimate tailored to your situation.
Your inputs
Adjust any value to update the results.
Calculated results
Based on your current inputs
Calculating…
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Calculation chart
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How this calculator works
Enter a starting balance, recurring monthly contribution, hypothetical annual rate, and number of years.
Formula
Future value = initial × (1+r)^n + monthly × ((1+r)^n − 1) ÷ r, with monthly deposits at period end.
Before you use the result
Calculator outputs are estimates based on the numbers you provide. Replace the examples with measurements, costs, rates, or product information appropriate to your situation.
Keep in mind
Illustration only, not guaranteed investment returns. Excludes fees, taxes, inflation, and volatile market returns.