Skip to main content

Simple Interest Calculator : Calculate Interest & Maturity Value

Calculate simple interest on bonds, certificates of deposit, or short-term loans using the foundational linear interest formula.

Interactive Calculator

100% Client-Side Engine
%
yrs
Total Accrued Interest (I = Prt)
+$1,500
Initial Principal
$10,000
Total Maturity Balance (A = P + I)
$11,500

How to Use This Tool

  1. Enter initial principal amount.
  2. Enter annual interest rate percentage.
  3. Specify time duration in years.
  4. Click Calculate to see interest generated and total final balance.