Compound Interest Calculator

Total Contributions: ${formatCurrency(totalContributions)} (your money)
Total Earnings: ${formatCurrency(totalEarnings)} (from compound interest)
Return on Investment: ${roi.toFixed(1)}% over ${years} years
Your money grew by: ${((finalBalance / totalContributions - 1) * 100).toFixed(1)}%

Watch your investments grow with regular contributions

Calculate how your investments will grow over time with compound interest. Add regular contributions at different frequencies and see detailed year-by-year projections. Perfect for retirement planning, college savings, or any long-term investment goal.

Initial Investment ($)

Annual Interest Rate (%)

Time Period (years)

Regular Contribution ($)

Contribution Frequency