Calculate simple or compound interest on any principal amount.
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Fill in the required numbers in the calculator.
The result updates as soon as you click Calculate.
This calculator is free and has no usage limit.
Simple & Compound Interest Calculator helps you compare how much interest a deposit or loan would accumulate under both interest methods.
Yes, completely free with no sign-up required and no limit on how many times you can use it.
No. All calculations happen instantly in your browser — nothing is sent to any server.