Simple Interest Calculator
Modify the values and click the calculate button to use
Result:
End Balance:
Total Interest:
Calculation steps:
Total Interest = × % ×
=
End Balance = +
=
Result:
Principal:
Total Interest:
Calculation steps:
Principal = ÷ (1 + % × )
=
Total Interest = -
=
Result:
Term: years
Calculation steps:
Term = ( ÷ - 1) ÷ %
= years
Result:
Rate: % per year
Calculation steps:
Rate = ( ÷ - 1) ÷
= % per year
Simple Interest Calculator – Calculate Interest Easily
The Simple Interest Calculator is a user-friendly tool that helps you quickly determine the interest earned or paid on a principal amount over a specific period. Unlike compound interest, which adds interest to the principal over time, simple interest is calculated only on the original amount.
Key Features:
✅ Calculate End Balance – Find out how much your investment will grow or how much you’ll owe.
✅ Determine Principal – Calculate the initial amount needed to reach a desired future value.
✅ Find Interest Rate – Discover the required rate to achieve your financial goal.
✅ Compute Loan Term – See how long it will take to repay a loan or reach an investment target.
How It Works:
Select a Calculation Mode – Choose between calculating Balance, Principal, Rate, or Term.
Enter Your Values – Input the known amounts (e.g., principal, interest rate, time).
Click Calculate – Get instant results with a detailed breakdown of the calculation.
Why Use Simple Interest?
Ideal for short-term loans and investments.
Easy to understand compared to compound interest.
Commonly used in personal loans, car loans, and some savings accounts.