💹 Compound Interest Calculator

Watch your money grow with the power of compound interest. See how small amounts add up over time.

💰 Investment Details

📊 Your Results

$102,421
Future Value
$70,000
Total Deposits
$32,421
Interest Earned

📚 The Power of Compound Interest

Compound interest is interest calculated on both the initial principal and the accumulated interest. This creates exponential growth over time, often called the "eighth wonder of the world."

A = P(1 + r/n)^(nt) + PMT × ((1 + r/n)^(nt) - 1) / (r/n)

Rule of 72: Divide 72 by your interest rate to estimate how many years it takes to double your money. At 8% interest, money doubles in about 9 years.