Interest Calculator
Calculate simple or compound interest on your investments or loans with detailed breakdowns.
Simple Interest Results
$10,000
Principal
$1,500
Interest Earned
$11,500
Total Amount
Formula Used:
Simple Interest = P × R × T
Interest = $10,000 × 5% × 3 years = $1,500
💡 Quick Facts
Rule of 72:72 ÷ interest rate
Daily compounding:365x per year
APY vs APR:Compound vs Simple
Best frequency:Daily or continuous
📊 Interest Comparison
Example: $10,000 at 5% for 10 years
Simple Interest:$15,000
Annual Compound:$16,289
Monthly Compound:$16,470
Daily Compound:$16,487
📚 Glossary
APY: Annual Percentage Yield (includes compounding)
APR: Annual Percentage Rate (simple interest)
Principal: The initial amount invested or borrowed
Compounding: Interest earning interest over time