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Simple Interest Calculator

Calculate simple interest returns

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📖 How to Use

Enter the principal
Enter the annual interest rate
Enter the number of years
Click Calculate to see interest and total

📐 Formula

Interest = principal × rate × years
Total = principal + interest

❓ FAQ

Which earns more, simple or compound interest?▾

Compound interest earns more because interest accrues on previously earned interest. The gap grows over time.

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About Simple Interest Calculator

This tool is completely free, no registration required. Works directly in your browser. Supports both PC and mobile devices.

Simple Interest Calculator is a free online tool that works on both PC and mobile. No registration or download required — just open in your browser. Results are accurate and reliable for everyday use and professional reference.