How to Use the Simple Interest Calculator
Enter principal amount, annual interest rate, and time period in years. Get interest amount, total amount payable, and monthly interest equivalent instantly.
Simple Interest Calculator Formula
SI = P × R × T / 100; Amount = P + SIP= PrincipalR= Annual rate %T= Time in years
Example Calculation
₹50,000 at 9% for 3 years:
SI = 50000 × 9 × 3 / 100 = ₹13,500
Interest = ₹13,500; Total = ₹63,500
Frequently Asked Questions
What is the difference between simple and compound interest?
Simple interest is calculated only on the principal. Compound interest is calculated on principal plus accumulated interest, so it grows faster over time.