📈 Compound Interest Calculator

Simulate long-term investment growth, compounding interest, and the wealth multiplier of regular contributions.

Future Portfolio Balance
$341,180.89
Total Principal Invested
$130,000.00
Total Compound Earnings
$211,180.89

The Compounding Effect Explained

Compound interest has famously been called the eighth wonder of the world. Unlike simple interest, which is calculated solely on the original principal, compounding calculates returns on both the accumulated interest and the original capital.

Over short horizons, regular deposits drive most of your balance. But after 10 to 20 years, investment returns begin compounding upon themselves exponentially, generating more growth each year than your actual cash deposits.