Entropy Calculator

Calculate password entropy bits.

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Estimate password entropy from length and character set diversity — higher bits mean stronger passwords.

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About this tool

Calculate password entropy bits This free Security tool from Bhuvanesh C runs entirely in your browser — your data stays on your device.

FAQ

Common questions about the Entropy Calculator.

Calculate password entropy bits. It is part of my free Security collection and works instantly in your browser.
Yes. This tool is completely free with no usage limits and no account required.
No. Processing happens in your browser whenever possible. Your input is not sent to my server.
Yes. The layout is responsive and works on phones, tablets, and desktops.
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