Calculateur d'entropie de mot de passe

Overview

Password Entropy Calculator is a Developer tool. Analyze charset, length and entropy with crack time estimate for security, with one-click copy and offline. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

• Daily use of Password Entropy Calculator: Enter a password to see its entropy, guesses and estimated crack time. — enter and get instant results without manual lookup.
• One-click copy keeps results ready to save, check or share with family and pros.
• Use Password Entropy Calculator offline or on poor network — all calculations stay local and private.
• Create UUIDs and short strings
• Raffle and random picks

How to use

1. 1 Enter a password to see its entropy, guesses and estimated crack time..
2. 2 Set length/charset rules
3. 3 Preview and lock/exclude items
4. 4 Copy or export CSV/TXT

Highlights

• Local & private: processing stays in your browser
• Live validation with tolerant parsing
• One-click copy and export for docs, code or sheets
• Batch and offline support under poor network

Notes

• Mock data for testing only
• Uses Crypto API
• Batch export in chunks for thousands

FAQ