Free Secure Password Generator
Updated September 2026
Generate strong, secure random passwords instantly — choose length and character sets (uppercase, lowercase, numbers, symbols). Copy with one click, no account or internet needed.
Verified Capabilities
Uses the Web Crypto API (crypto.getRandomValues) with rejection sampling, not Math.random().
Every checked character type is guaranteed to appear at least once, then the rest of the password is filled and shuffled.
A live strength indicator (Very Weak to Very Strong) updates based on length and selected character types.
Length is capped at 64 characters via the slider — there is no way to generate a longer password.
Sometimes you need a fast, unbiased result. The Password Generator delivers instant, fair outcomes for decisions, games, and creative brainstorming sessions.
Generate strong, secure random passwords instantly — choose length and character sets (uppercase, lowercase, numbers, symbols). Copy with one click, no account or internet needed. Results are immediate — no waiting, no loading screens, no account required.
Who uses the Password Generator?
- Security-conscious users creating a unique strong password for each new account they sign up to
- IT administrators generating temporary credentials for new employee accounts
- Developers seeding test databases with realistic password hashes for staging environments
Common uses and search terms
The Password Generator is frequently used for: password generator, strong password, random password, secure password generator, generate a password, random password maker, password creator, complex password generator, strong password maker, safe password generator, online password generator. Whether you need a quick result or are working through a longer project, the tool handles all common variations without any configuration.
Why use Allio Tools's Password Generator?
Everything runs locally in your browser. No data is sent to a server, logged, or stored anywhere. The tool is completely free with no usage limits, no premium tiers, and no account required. Available in 11 languages and optimised for all screen sizes, the Password Generator works on desktop, tablet, and mobile with no app download needed.
See also:Spin the Wheel · Random Number Generator · Coin Flip
How the Password Generator works
Set the desired password Length using the slider (8–64 characters).
Check or uncheck character types: Uppercase (A–Z), Lowercase (a–z), Numbers (0–9), Symbols (!@#$ etc.).
Click Generate Password — a new secure password appears in the output field, with a strength meter below it.
Click the copy icon to copy the password to your clipboard, then paste it into your password manager or field.
Tips & tricks
- The slider caps at 64 characters, not 128 — for most accounts 16–20 characters with all four character types is already very strong.
- Symbols are unchecked by default; enable them for sites that require symbols, but note some login forms still reject certain special characters.
- Every generated password is guaranteed to include at least one character from each checked type, so a 12-character password with all four types on always has all four represented, not just randomly included.
Frequently Asked Questions
How long should a secure password be?
Security guidelines recommend a minimum of 12–16 characters for general accounts and 20+ for high-value targets like email, banking, or work systems. Length is the single biggest factor in password strength — a 20-character lowercase-only password is stronger than a 10-character mixed-type one.
Is this password generator truly random?
Yes. Passwords are generated using the Web Crypto API (window.crypto.getRandomValues), which uses a cryptographically secure pseudorandom number generator (CSPRNG). This is the same standard used by security software and password managers.
Should I store this password in my browser or in a password manager?
A dedicated password manager (Bitwarden, 1Password, Dashlane) is safer than browser-saved passwords. Password managers encrypt your vault with a master key, work across devices, and warn you about reused or compromised passwords. Browser storage is convenient but less secure.
Why should I use a different password for every site?
If one site suffers a data breach and your password is leaked, attackers use automated tools to try that same email and password combination on hundreds of other sites (credential stuffing). Unique passwords per site mean one breach never cascades into account takeovers elsewhere.
Is my generated password sent anywhere?
No. Password generation happens entirely in your browser using JavaScript. Nothing you generate is transmitted to any server, logged, or stored. Close the tab and the password is gone — save it before leaving.
Is my data safe when using the Password Generator?
Completely safe. The Password Generator processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
Is the Password Generator cryptographically secure?
Yes. Unlike most randomness on this site, the Password Generator specifically uses your browser's Crypto API (crypto.getRandomValues()) rather than Math.random() — the same class of random number generator used for cryptographic keys — because password strength depends on genuinely unpredictable randomness.
Can I customise what the Password Generator generates?
Yes. Where customisation options are available, you can add your own items, set numeric ranges, or adjust parameters before generating. Default settings are designed for the most common use case so you can get an instant result without any configuration.
Works with ChatGPT, Claude, Cursor, GitHub Copilot, VS Code, Poe and more — 106+ tools, zero data collection.