INVESTMENT CALCULATOR
Compound Interest Calculator
See how your money can grow over time with the power of compound interest, regular contributions, and market compounding.
Investment Parameters
Projected Future Balance
$310,230
Total Principal
$125,000
Total Interest Earned
$185,230
Interest Multiplier
2.48x
Growth Trajectory (Principal vs Compound Interest)
Year 0
Year 10
Year 20
How Compound Interest Works
Compound interest is the mathematical phenomenon where the interest you earn begins earning interest on itself, leading to exponential portfolio expansion over extended timeframes.
A = P(1 + r/n)^(nt) + PMT × [ ((1 + r/n)^(nt) - 1) / (r/n) ]
Where: A = Future Value, P = Principal, r = Annual Interest Rate (decimal), n = Compounding Frequency, t = Time in Years, PMT = Monthly Contribution.