PIN Generator
Truly random PINs from a cryptographic generator, 4 to 12 digits, free of the birthdays and patterns attackers try first. Generated locally; the safety still comes from your device's lockout policy.
Site policy (advanced)
EFF long list: 7,776 words, each independently chosen word adds 12.9 bits. Six words is EFF's recommendation for most uses.
A PIN's safety comes from the device's lockout policy, not from its size. Never use a PIN as a website password.
Exact for this randomly generated secret: the entropy of the generation procedure itself, including any required-class constraint.
| Online, throttled 100 guesses per second | ... |
|---|---|
| Offline, fast hash 10 billion guesses per second (MD5-class, GPU rig) | ... |
| Offline, strong KDF 10 thousand guesses per second (bcrypt/Argon2) | ... |
Generated locally with crypto.getRandomValues; generation works offline. Nothing is stored, and nothing leaves your browser unless you click the breach check.
Test your own password
Runs locally with zxcvbn, the pattern-and-dictionary estimator: it recognizes tens of thousands of common passwords, names, words, dates, keyboard walks, sequences, repeats and leetspeak. Results for a typed password are ESTIMATES of guessing resistance, a different thing from the exact entropy shown for generated secrets above.
Estimated guessing resistance for a human-chosen password. No exact bit count exists for text a person made up.
| Online, throttled 100 guesses per second | ... |
|---|---|
| Offline, fast hash 10 billion guesses per second | ... |
Optional and button-triggered: the check hashes your password locally with SHA-1 and sends only the first 5 characters of the hash to haveibeenpwned.com, with response padding enabled so even the response size reveals nothing. The password itself never leaves your browser.
The PIN threat model, honestly
A PIN is the weakest secret you use, and that is by design: it trades entropy for speed because a device enforces the attempt budget. That deal only works if both halves hold. Your half is unpredictability, which this generator handles: no birthdays, no 2580, no repeated pairs, just a uniform draw. The device's half is the lockout: attempt counters, escalating delays, hardware-backed wipe thresholds. Anywhere the second half is missing, a website login, a WiFi password, an encryption key, a PIN is the wrong instrument entirely; use the password generator there.
PIN generator FAQ
Why generate a PIN instead of picking one?
Because human-picked PINs cluster catastrophically. Studies of leaked PIN sets show 1234 alone covers about 10 percent of all 4-digit PINs, the top 20 cover more than a quarter, and dates (19xx, MMDD, DDMM) dominate the rest. An attacker with a handful of tries starts exactly there. A random PIN from a cryptographic generator is equally likely to be any value, which is the entire defense.
How many digits should my PIN have?
Six where the device allows it: 4 digits give 10,000 possibilities, 6 give a million, a hundred-fold jump for two extra taps. Phones support 6 or more; many cards remain fixed at 4, in which case randomness matters even more. Where alphanumeric device passwords are an option (phone lock screens), they beat any PIN.
Are PINs safe at all with so few combinations?
Only because of lockout policy, and this page says so plainly. A PIN's protection comes from the device limiting attempts: three tries then a card swallows, ten tries then a phone wipes or delays. Against an attacker who can guess without limits, offline, every PIN falls instantly; that is why a PIN must never be used as a website password, and why device secure elements enforce attempt counters in hardware.
Should different cards and devices get different PINs?
Yes, same logic as passwords: a shoulder-surfed or skimmed PIN should unlock exactly one thing. Random PINs are hard to memorize in bulk, so store the rarely typed ones in your password manager's secure notes; the two or three you use daily will stick from repetition within a week.
Is the generated PIN sent or stored anywhere?
No. Generation uses your browser's cryptographic random source, works offline, and this page keeps no history. When you leave, the PIN exists only where you put it.
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