All-In-Calc

Interest Calculator
Interest Calculator
Calculate simple interest and total amount.

Online Interest Calculator

Whether you are lending money, borrowing funds, or calculating returns on a fixed deposit, our Interest Calculator gives you exact figures in seconds without any complex financial jargon.

The Universal Interest Formula

Simple interest is calculated only on the principal amount of a loan or deposit. The formula is straightforward:

Simple Interest (SI) = (P × R × T) ÷ 100
  • P (Principal): The initial amount of money borrowed or invested.
  • R (Rate): The annual interest rate percentage.
  • T (Time): The duration in years.

Note: Unlike compound interest, simple interest does not charge or yield interest on accumulated interest.