Interest Tool

Free Simple & Compound Interest Calculator

Compute your total future investment balance, compound growth yields, or simple interest gains over any number of years.

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%
Years

Total Future Balance

$20,096.61

Growth Summary:
Principal Investment $10,000.00
Total Interest Earned $10,096.61
Future Accrued Value $20,096.61

Simple vs Compound Interest:

Understanding the way your capital yields growth is critical in financial planning:

  • Simple Interest: Calculated exclusively on the initial principal. Formula: Interest = Principal × Rate × Time.
  • Compound Interest: Interest is reinvested, meaning you earn interest on your interest. The more frequently interest compounds (e.g. Monthly vs Annually), the faster your money grows over time.