How to Calculate Simple Interest
Calculate your interest in 3 steps.
Principal
Enter the loan or investment amount.
Rate
Input the annual interest rate.
Time
Enter the time duration in years.
Calculate
See the total interest and final amount instantly.
What does this tool do?
Back to basics. Simple interest is straightforward but essential for understanding loans and basic savings. Unlike compound interest, simple interest is calculated only on the initial principal amount. This tool helps you quickly determine the interest on loans or the return on non-compounding investments.
Frequently Asked Questions
What is the Simple Interest formula?
The formula is SI = (P × R × T) / 100, where P is Principal, R is Rate of Interest, and T is Time period.
How is Simple Interest different from Compound Interest?
Simple interest is calculated only on the principal amount, while compound interest is calculated on the principal plus accumulated interest.
Is this calculator free?
Yes, it is completely free to use.