Strong Password Generator
Strong Password Generator: free, instant and private. Length matters more than symbol variety: every extra character multiplies the search space.
How the Strong Password Generator works
The Strong Password Generator takes Length, Character set and returns the answer instantly — no button to hunt for, no page reload. Length matters more than symbol variety: every extra character multiplies the search space. Randomness comes from the operating system’s cryptographic generator, never from Math.random.
Enter your own numbers to replace the example values; the result panel updates as you type. Everything runs in this single page, so nothing you enter leaves your device.
Formula used
each character drawn from a set of 26–90 symbols using your OS’s CSPRNG
| Symbol | Meaning |
|---|---|
| length | number of characters |
| character set | letters, letters + digits, or all three classes |
Length matters more than symbol variety: every extra character multiplies the search space. Randomness comes from the operating system’s cryptographic generator, never from Math.random.
Inputs used: Length, Character set.
Worked example
Take the default example — length of 20, character set set to Letters + digits + symbols:
- password: b8Cf#wu0!uNFdwchG$mO
- length: 20
Frequently asked questions
- What formula does the Strong Password Generator use?
- It uses each character drawn from a set of 26–90 symbols using your OS’s CSPRNG, where length is the number of characters; character set is the letters, letters + digits, or all three classes.
- Is the Strong Password Generator free?
- Yes. There is no signup, no usage limit and no watermark — the generator runs entirely in your browser.
- How do I read the result?
- Length matters more than symbol variety: every extra character multiplies the search space. Randomness comes from the operating system’s cryptographic generator, never from Math.random.
- Does the Strong Password Generator store or send my data?
- No. Every calculation happens locally in the page, so the numbers you type are never uploaded or logged.
- Does it work on a phone and offline?
- Yes — the page is a single lightweight file that adapts to any screen size. Once it has loaded it keeps working without a network connection.