Password Strength Checker-- Entropy & Suggestions

Check password strength with real-time analysis.

Password Strength Checker Tool

Enter a passwordEntropy: 0 bits

Length

0

Score

0 / 4

Suggestions

  • -Enter a password to check.

Why Use Our Password Checker?

Real-Time

Instant analysis as you type.

Entropy Calc

Precise entropy in bits.

100% Secure

Never leaves your browser.

Pattern Check

Detects common patterns.

Suggestions

Actionable improvement tips.

Free Forever

No signup, no limits.

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Password Security Guide

A strong password is long (12+ characters), uses a mix of uppercase, lowercase, numbers, and special characters, and avoids common patterns, dictionary words, and personal information. Password entropy measures unpredictability -- aim for 80+ bits for critical accounts.