Most password breaches do not come from brilliant hacking — they come from people reusing one memorable password everywhere, so a single leaked database unlocks all their accounts. A password generator breaks that habit in seconds: it creates long, random passwords no human would invent, with adjustable length and your choice of uppercase letters, lowercase letters, numbers, and symbols. One click, one strong password, ready to copy.
Randomness is the whole point. Human-invented passwords follow patterns — names, years, keyboard walks — that attackers and guessing software exploit. A generated 16-character password drawn from all four character sets has no pattern to exploit, and guessing it by brute force would take longer than the age of the universe with current technology. Length plus randomness beats cleverness every time.
Every password here is created locally in your browser using your device’s built-in cryptographic random number generator — the same class of randomness browsers use for security features. Nothing is sent over the internet, nothing is logged, and nothing is stored: once you close the tab, the password exists only wherever you saved it. Pair it with a password manager and you never have to memorise one again.
How it works
When you click Generate, the tool first builds a character pool from the sets you ticked — for example, A–Z plus a–z plus 0–9 plus symbols gives a pool of around 90 characters. It then asks your browser’s cryptographic random number generator for one random value per character position and picks the character at that position in the pool. Each position is independent, so every password is a fresh, unpredictable draw.
Cryptographic randomness matters more than it sounds. Ordinary random functions in programming are designed for games and simulations, not security, and their output can sometimes be predicted. The Web Crypto API used here is designed specifically for security-sensitive work and draws from the operating system’s entropy pool, making the output practically unpredictable.
The length slider (8 to 64 characters) directly controls strength: each extra character multiplies the guessing space by the pool size. A 16-character password from the full pool has about 95 bits of entropy — far beyond brute-force reach — while an 8-character one is merely adequate. The tool never transmits or remembers the result, so the only copy is the one you keep.
How to use this tool
- Set the password length with the slider — 16 characters is a solid default.
- Tick the character sets you want: uppercase, lowercase, numbers, symbols.
- Click Generate password to create a random password.
- Copy it with the Copy button.
- Save it in a password manager or another safe place immediately.
- Generate a fresh, unique password for every important account.
Practical tips
- Never reuse passwords across sites: one breach then exposes every account sharing it, which is exactly how most account takeovers happen.
- Store generated passwords in a reputable password manager instead of notes apps, screenshots, or — worst of all — your email drafts.
- Turn on two-factor authentication wherever offered; even the strongest password is safer with a second factor.
- If a website rejects symbols or caps the length, regenerate with fewer character sets rather than shortening a good password.
- Change passwords promptly if a service you use announces a data breach, starting with your email account.
Frequently asked questions
Are the generated passwords truly random?
They use your browser's built-in cryptographic random number generator, designed specifically for security-sensitive uses. That makes them unpredictable in practice — far stronger than anything a person invents by hand. No generator can offer absolute mathematical guarantees, but this is the same underlying technology browsers use for their own security features.
Do you store or see the passwords I generate?
No. Every password is created locally in your browser and never leaves your device — nothing is sent over the internet, logged, or saved on any server. Once you close or refresh the page, the password is gone unless you copied it somewhere yourself. There is simply no step in the process where the password travels anywhere — no form submission, no analytics event, no cloud sync.
How long should my password be?
Longer is generally stronger: 12 to 16 characters is a sensible minimum for important accounts, and some sites now allow 30 or more. A few websites still cap the maximum, so when in doubt choose the longest password the site permits with a mix of character types. For low-value accounts like newsletters, 12 characters is plenty; for email and banking, go as long as the site allows.
Should I use the same generated password for every account?
No — that defeats the purpose. If one site suffers a breach, attackers try the stolen passwords on other sites, so reuse puts every account at risk. Generate a unique password per site and let a password manager remember them. A password manager removes the memorisation burden entirely, making unique passwords per site practical instead of painful.
Can I generate a numbers-only PIN?
Yes — untick everything except numbers and set a short length. A 6-digit PIN from this generator is as random as PINs get, though remember that short PINs are only suitable where the service also limits guessing attempts, like phone unlock screens and ATMs. Avoid obvious PINs like 123456 or birth years even when they are randomly offered — just regenerate if you get one.
What if a website does not accept symbols?
Regenerate with symbols unticked rather than deleting characters from a good password. Some older banking and government sites restrict special characters — the tool adapts in one click, and a longer letters-and-numbers password remains strong. A longer letters-and-numbers password remains strong protection. The tool adapts to site restrictions in one click.
Note: A strong password helps, but it cannot protect you on its own — enable two-factor authentication, keep devices updated, and never share passwords.