Random Password Generator
Generate strong random passwords. Length slider, charset toggles, exclude ambiguous, batch mode (1–20).
Quick answer: Random Password Generator: generate strong random passwords. Length slider, charset toggles, exclude ambiguous, batch mode (1–20). Runs entirely in your browser, free, no signup.
Last updated
Good to know
The math behind password strength is simpler than it looks: security scales with entropy, which is length multiplied by the size of the character set. That is why a longer password beats a shorter but more exotic one — every extra character roughly doubles the number of guesses an attacker must make. Sixteen characters with all four character types is a solid baseline; twenty or more is better wherever the site allows it.
This generator draws from crypto.getRandomValues, the browser's cryptographically secure random source, not the ordinary Math.random used for shuffles and animations. That distinction matters: a predictable random source is a real-world way passwords get broken. Nothing is transmitted, so even generating a batch of twenty for a new server is safe to do here.
The two rules that protect you most have nothing to do with the generator. First, never reuse a password — one breached site otherwise unlocks every account that shares it. Second, store these in a password manager rather than trying to memorize them, since a unique 16-character string per site is only practical with a vault. Enable the "exclude ambiguous" option when a human will ever have to read the password aloud or type it from a screen.
Frequently asked questions
- How do I generate a strong password?
- Set the length to 16 or more, enable all four charsets (lower, upper, digits, symbols), and click Generate. The strength bar confirms it's strong; copy it with one click.
- How long should a password be?
- 16 characters is a good baseline; 20+ if you can. Length matters more than complexity — every extra character roughly doubles the time to crack by brute force.
- Should I use special characters?
- Yes when the site allows them — they widen the alphabet and increase strength. If a site rejects symbols, compensate with extra length.
- Are password generators safe?
- This one is. Passwords are generated entirely in your browser using crypto.getRandomValues (a cryptographically secure source) and never sent to any server.
- What is a passphrase vs password?
- A passphrase is a sequence of words ("correct horse battery staple"); a password is a string of mixed characters ("X9!q@vR2…"). Both work — pick what's easier for you to use with a manager.
- How do I create a password I can remember?
- Don't — use a password manager. If you must, generate a passphrase of 5+ random words. Don't reuse passwords across sites under any circumstances.
- Can I generate multiple passwords at once?
- Yes. Set the batch size from 1 to 20 and Generate produces a list. Useful for setting up a new system or rotating multiple credentials.
- What makes a password weak?
- Short length, dictionary words, predictable patterns (qwerty, 1234), reuse across sites, and personal info that can be guessed (birthdays, names).
- Should I reuse passwords?
- No. One leaked site exposes every other account that shares the password. A password manager makes unique passwords effortless.
- Do I need a password manager?
- Yes — it's the single biggest security upgrade you can make. Bitwarden, 1Password and the built-in browser managers are all good.