Compound Growth
Starting balance + monthly contribution + time. Assumes monthly compounding.
Calculator automatically updates with every variable change.
Final balance$0
Total contributed$0
Total interest gained$0
Duration0
Avg interest / month$0
How this is calculated
This uses the compound interest formula with monthly contributions. Each month, we calculate
interest on the current balance, add it, and then add your monthly contribution.
Formula: A = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) - 1) / (r/n)]
Example: $1,000 at 12% for 1 month: $10 interest. Balance becomes $1,010. If you
add
$100, final is $1,110.
Disclaimer: This calculator is for informational purposes only. Results are hypothetical
estimates based on your inputs and do not guarantee future performance. Not financial advice.