Generate strong, random passwords instantly with this free online password generator. Runs in your browser, nothing is ever sent to a server. No signup needed.
A password generator is a tool that creates random, high-entropy passwords that are far harder to crack than anything a person would invent, because human-chosen passwords follow predictable patterns that attackers already know. The fix takes seconds but understanding why the passwords you're using now are vulnerable makes it a lot more likely you'll actually switch. Try the free Password Generator → The Problem With Passwords You Make Up Yourself When people create their own "strong" passwords, they reach for the same tricks almost universally: Capitalize the first letter Put the number at the end Swap letters for lookalike symbols ( a → @ , s → $ , o → 0 ) Use a familiar word a pet, a birth year, a favorite team Password-cracking software is built specifically to handle all of these. Substituting @ for a in a dictionary word doesn't create a new password; it creates a dictionary word with a known transformation applied, and cracking tools test those transformations automatically. P@ssw0rd123! looks complex to a human and falls in seconds to a machine. The real measure of password strength isn't how complicated it looks — it's how many possible combinations an attacker would have to try. That's called entropy, and randomness is the only reliable way to maximize it. What Actually Makes a Password Strong Length matters more than complexity. Every character you add multiplies the number of possible combinations. A 16-character password made of only lowercase letters is dramatically harder to brute-force than an 8-character password with symbols, numbers, and mixed case. Randomness matters more than cleverness. A truly random string has no pattern for a cracking tool to exploit. Anything you invent yourself carries the fingerprint of how humans think. Uniqueness matters most of all. Reusing one password across accounts means a single breach at any one service exposes all of them this is called credential stuffing, and it's one of the most common ways accounts get compromised. A password can be perfectly strong and still useless if it's been leaked from another site. Practical baseline: at least 16 characters, randomly generated, different for every account. How to Generate a Strong Password Open the Password Generator Set the length 16 characters minimum, 20+ for important accounts like email and banking Include uppercase, lowercase, numbers, and symbols Optionally exclude ambiguous characters ( l , 1 , I , O , 0 ) if you'll ever need to type or read it manually Copy it and store it in a password manager The generator runs entirely in your browser using client-side JavaScript the password is created on your device and never transmitted to any server. Check a Password You're Already Using If you want to evaluate an existing password rather than create a new one, the Password Strength Checker analyzes it in real time and shows how it holds up against common attack methods. It's a fast way to find out whether the password you've been reusing for five years is as solid as you assumed. Password Length vs. Crack Difficulty Password Why it fails summer2024 Dictionary word + predictable year P@ssw0rd! Dictionary word with known character substitutions Jennifer1985 Name + birth year, both often publicly available qwertyuiop Keyboard pattern, tested first by cracking tools xK9#mR2vLp$wQ7nB Random, 16 chars, no pattern to exploit ✓ Where to Store Generated Passwords The obvious objection to random passwords: you can't remember them. That's the point and it's why a password manager isn't optional if you're using generated passwords. A password manager stores all your credentials behind one master password, which is the only one you need to memorize. For that single master password, a long passphrase of unrelated words works well: it's memorable to you but still high-entropy, since length does the heavy lifting. Avoid storing passwords in browser autofill alone, plain text files, or notes apps without encryption. Frequently Asked Questions Is an online password generator safe to use? It depends on how it's built. A generator that runs client-side meaning the password is generated in your browser using JavaScript, never sent to a server is safe, because the password never leaves your device. The ToolBox Password Generator works this way. Avoid any generator that requires an account or transmits data to a server. How long should a password be in 2026? A minimum of 16 characters for general accounts, and 20 or more for high-value accounts like primary email, banking, and password manager master passwords. Length is the single most effective factor in resisting brute-force attacks. Should I change my passwords regularly? Current security guidance has moved away from routine scheduled password changes, which tend to push people toward weaker, incrementally modified passwords ( Password1 → Password2 ). Instead, use a long unique password for each account and change it immediately if a service reports a breach. What's the differe