Simple Interest Calculator

Total Amount

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Interest Earned

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Principal

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starting amount

Total Yield

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Daily Interest

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Monthly Interest

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CI Would Give

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Principal vs Interest

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SI vs CI Growth Comparison

Year-by-Year Breakdown

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Year	SI Amount	SI Interest	CI Amount	CI Interest	CI Advantage

How is Simple Interest calculated?

Simple Interest is the most straightforward form of interest. It is calculated only on the original principal, not on accumulated interest. This is common in short-term loans, some fixed deposits, and government schemes.

SI = P × R × T / 100
Total Amount = P + SI

Where: P = Principal, R = Annual rate (%), T = Time (years)

The comparison with Compound Interest shows the cost of choosing simple interest instruments. For short durations (1–3 years), the difference is minimal. Over longer periods (10+ years), compound interest significantly outperforms simple interest, highlighting the importance of choosing compounding instruments for long-term wealth building.