Skip to main content
Tool ReignTool Reign
DeveloperFinanceTextPDFImageAll categories
Tool ReignTool Reign

368 free online tools for developers, finance, and businesses. No signup required.

100% privateFree tools
Product HuntPeerlist
Popular
JSON FormatterText EditorGST CalculatorEMI CalculatorWord CounterMerge PDFImage ResizerSIP CalculatorJWT Decoder
All ToolsGuidesPrivacy PolicyTerms of UseAboutContact

© 2026 ToolReign. All rights reserved.
· Made for 🌍 Everyone

HomeSecurityPassword Strength Checker

Password Strength Checker

Browser-Only

Analyze password strength with entropy score, visual meter, and actionable feedback.

0 characters

Enter a password to see strength analysis

Related Tools

More free utilities you might find useful

📊
Entropy Calculator
Calculate bits
🔑
Password Generator
Generate passwords
#️⃣
Hash Generator
SHA hashes
📱
TOTP Generator
2FA codes

Frequently Asked Questions

Quick answers to common questions

How is strength calculated?+

We score length, character variety (upper, lower, digits, symbols), and penalize common passwords and patterns.

What is entropy?+

Entropy measures unpredictability in bits. Higher entropy means more possible combinations and harder brute-force attacks.

Is my password sent anywhere?+

No. Analysis runs locally in your browser.

What score is good enough?+

Aim for Strong or Very Strong (12+ chars with mixed character types).

Processing runs in your browser. Your inputs are not sent to our servers.