What is simple interest formula?

SI = P × R × T / 100. Where P = Principal, R = Rate per annum, T = Time in years. Total Amount = P + SI.

Difference between simple and compound interest?

Simple interest is calculated only on principal. Compound interest is calculated on principal + accumulated interest. CI gives more returns over time.

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Simple Interest Calculator

Simple interest formula calculator

Principal (P)

Rs.

Rate of Interest (R)

Time Period (T)

yrs

Simple Interest Result

Simple Interest

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Total Amount

—

Daily Interest

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Monthly Interest

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Formula

SI = P × R × T / 100
Amount = P + SI

Frequently Asked Questions

Simple Interest is calculated only on principal. Compound Interest is on principal + accumulated interest. CI always yields more over time.

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Complete Simple Interest Guide 2026

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