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Compound Interest Calculator

See the power of compound interest. Calculate how your money grows with regular contributions over time.

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📈 Compound Interest Facts

  • • Einstein called it the "eighth wonder of the world"
  • • Starting early matters more than amount
  • • Rule of 72: Years to double = 72 ÷ rate
  • • Monthly compounding beats annual
  • • Reinvesting dividends accelerates growth
  • • $500/month at 8% for 30 years = $745K+