Interest Calculator

Efficiently calculate and compare interests to make smarter saving or borrowing decisions.

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Select interest type and enter your values to see the calculated results.

๐Ÿ“š Education: Compound interest is often called the "8th wonder of the world" because it calculates interest on interest, leading to exponential growth over time.

Understanding the Difference

Simple Interest (SI)

SI is calculated only on the original principal amount. It grows linearly and is common in short-term personal loans or specific bank deposits.


Formula: (P ร— R ร— T) / 100

Compound Interest (CI)

CI is calculated on the principal plus any accumulated interest. It grows exponentially and is the standard for most savings and long-term investments.


Formula: P(1 + R/100)แต€ - P