Compound Interest Calculator
Model investment growth with monthly contributions and monthly compounding.
Local calculation model
LocalInvestment assumptions stay in this browser session
RiskProjected returns are not guaranteed
ExportSave assumptions with date and return caveats
Investment inputs
Use the VitalCalc sample, then adjust initial balance, contribution, return, and years.
Growth summary
Run calculation to project future value and interest earned.
Waiting for calculationCalculate first to see year-one growth.