Simple Interest Calculator
Calculate simple interest and total amount in seconds.
₹1,00,000
Principal
₹40,000
Simple interest
₹1,40,000
Total amount
Results are estimates for information only, not financial advice. See how we build and verify our calculators.
Calculate simple interest on a principal over a period of time. Enter the principal, annual rate and number of years to see the interest and the total amount payable.
How to use the Simple Interest Calculator
- Enter principal, rate and time in years.
- Read the simple interest and total amount.
- Adjust any value to compare.
Frequently asked questions
What is the simple interest formula?
Simple Interest = (P × R × T) / 100, where P is principal, R is the annual rate, and T is time in years. The total amount is P + interest.
How is simple interest different from compound?
Simple interest is calculated only on the original principal; compound interest is calculated on the principal plus accumulated interest, so it grows faster.