Simple Interest Calculator

Calculate simple interest on loans or investments. Find the interest amount and total value using principal, rate, and time.

USD
%
years

Total Interest

$1,500.00

Total Value$11,500.00

Total Interest vs Time Period

How to Calculate Simple Interest

Simple interest is calculated only on the original principal amount.

Formula

I = P * r * t

Where:

  • I = Interest
  • P = Principal
  • r = Annual rate (as decimal)
  • t = Time in years
  • Esempio Risolto

    You deposit $10,000 at 5% simple interest for 3 years.

    1. 01Interest = $10,000 * 0.05 * 3 = $1,500
    2. 02Total value = $10,000 + $1,500 = $11,500

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