Password Generator
Generate strong, random passwords. Customize length, character sets, and exclusions. Button-triggered (no auto-generate).
Entropy estimate:
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Copies all generated passwords, one per line
Password best practices
- Length beats cleverness. Aim for 12–16+ characters for accounts; 20–30+ for critical systems.
- Use unique passwords per site. One breach shouldn’t unlock everything.
- Use a password manager. Store and autofill instead of memorizing.
- Enable MFA/2FA. Adds a second barrier even if a password leaks.
- Rotate only when needed. Change immediately after a breach or suspicion—not arbitrarily every week.
Entropy & strength (simple view)
Entropy is the “unpredictability” of a password. A quick estimate is:
bits ≈ length × log2(poolSize),
where poolSize is the number of possible characters (e.g., 26 lowercase + 26 uppercase + 10 digits + symbols).
| Bits | Interpretation |
|---|---|
| ~< 40 | Weak: guessable with modest effort |
| 40–60 | Okay for low-risk use |
| 60–80 | Strong for typical accounts |
| > 80 | Excellent for high-value secrets |
Note: This is a rough guide—not a guarantee against targeted attacks or poor storage by websites.