Your password is never stored or transmitted
Strong Password Tips:
- • Use 12+ characters
- • Mix uppercase, lowercase, numbers
- • Include special characters
- • Avoid personal information
- • Use unique passwords per site
Security Best Practices:
- • Enable two-factor authentication
- • Use a password manager
- • Update passwords regularly
- • Never share passwords
- • Monitor for breaches
Password security basics
Most account takeovers start with reused or guessable passwords. This checker is a quick sanity check—not a guarantee of safety. Pair strong unique passwords with a password manager and 2FA on important accounts.
The hash tool outputs a SHA-256 digest of whatever text you enter. That is useful for checksums and API testing, not for securing user login databases.
What makes a strong password?
Strong passwords are long, random, and unique per account. Length and unpredictability matter more than exotic symbols alone.
This tool generates random passwords and checks basic strength heuristics. Use a reputable password manager to store credentials securely.
How the calculation works
- Choose length and character sets (upper, lower, numbers, symbols).
- Generate random characters using secure browser APIs where available.
- Score length and variety with simple heuristics—not a breach database check.
Worked examples
16-character mixed password
- Includes upper, lower, digits, symbols
- Length 16+
Resists brute force far better than an 8-character dictionary word—still use unique passwords per site.
Practical uses
- •Creating credentials for new accounts
- •Replacing reused passwords after a breach
- •Teaching password hygiene
Limitations
- !Does not check against known leaked passwords (use Have I Been Pwned separately)
- !Generated passwords must be stored safely—do not email or screenshot
References
How These Tools Work
Analyze locally
Your browser checks length, character types, and simple patterns.
Show a strength label
A bar and label (Very Weak through Strong) reflect the score.
Hash on demand
SHA-256 runs via the Web Crypto API when you generate a hash.
What is Password Tools?
A password generator creates a random string from a character set you choose, and a strength checker estimates how hard that string is to crack. Longer passwords mixing uppercase, lowercase, numbers, and symbols resist brute-force attacks far better than short complex ones.
The strength meter scores passwords on length, character variety, and avoidance of common patterns. The hash generator uses the browser's built-in SHA-256 implementation. Neither feature sends data to our servers.
Strength score
Simple rules—not a full entropy or breach audit.
Private
Processing stays on your device.
SHA-256 only
For dev/testing—not password storage for live apps.
Last updated: · Published:
How to Use This Tool
Enter a password
Type or paste text into the strength field to see a live score.
Review the label
Check length, variety, and whether common patterns were detected.
Generate a hash (optional)
Use the hash tool when you need a SHA-256 hex string for development or verification.
Copy if needed
Copy the hash output—do not share live passwords in chat or email.
Pro Tips
- Use a unique password for every site—reuse is the main risk after a breach
- Long passphrases beat short complex passwords for most people
- Turn on two-factor authentication on email, banking, and social accounts
- Never enter your real banking password on third-party sites you do not trust
- For apps you build, store passwords with bcrypt or Argon2—not plain SHA-256