Password Generator
Generate a random, secure password with your chosen length and character types.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Your result
24TfXUC8JAQXqPpW
Generated password
AI explanation
Formula
Each character is drawn at random from the selected character sets; entropy = length × log₂(character pool size)Worked example
16 characters, uppercase + lowercase + numbers
| Field | Value |
|---|---|
| Password length | 16 |
| Include uppercase letters (A-Z) | true |
| Include lowercase letters (a-z) | true |
| Include numbers (0-9) | true |
| Include symbols (!@#$%...) | false |
| Generated password | aB3dE9fGh2JkLm7P |
| Password entropy (bits) | 95.27 |
Assumptions
- Generates a fresh random password every time — changing any option or clicking Reset draws a new password.
- Entropy is a measure of theoretical randomness, not a guarantee against all attacks — a long password from a weak generator, or a strong password reused across sites, both remain risks this number doesn't capture.
- At least one character type must be selected.
Frequently asked questions
How do I get a new password?
Change any option (even slightly) or click Reset — either one generates a fresh random password.
What is password entropy and what's a "good" value?
Entropy measures how many bits of randomness a password has — higher is harder to guess or brute-force. As a rough guide, 60+ bits is reasonable for most accounts, and 80+ bits is strong; each character type you add and each extra character length increases entropy.
Should I include symbols in my password?
Yes, when the site allows it — symbols expand the character pool, increasing entropy for the same length. Some older or poorly-designed systems restrict symbols, in which case rely on greater length instead.
Related calculators
Passwords are generated client-side using standard pseudo-random number generation, for general password creation. For extremely high-security use cases, verify your organization's specific password policy and generator requirements.
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