Loan Interest Calculator

Compare Simple vs. Compound interest visually. All calculations are performed instantly in strict dark mode.

Loan Details

Adjust the values on the left and click Calculate to view results.

Understanding the Math

  • Simple Interest: Calculated only on the principal amount. Formula: P × r × t.
  • Compound Interest: Calculated on the principal plus accumulated interest. Formula: P(1 + r/n)^(nt).
  • Frequency: The more frequently interest is compounded (e.g., Monthly vs Yearly), the higher the total amount paid.