Free Strong Password
Generator
Create a strong, random password instantly — a ready-to-use one is already below. Tweak it, copy it, done. Cryptographically secure, private by design.
Click to copy
- crypto.getRandomValues()
- No data ever leaves your device
- Open & ad-free
Need a different kind of secret?
Every tool below is the same engine, tuned for a specific job — one click from here.
Passphrase generator
Memorable word-based secrets like correct-horse-battery.
Open toolMemorable password
Strong but easy to remember — random words you can type.
Open toolPIN generator
Truly random 4–12 digit PINs with no human bias.
Open toolWi-Fi password
Strong WPA2 / WPA3 keys, ready to share with guests.
Open toolWi-Fi QR code
Guests join by scanning — no typing the password.
Open tool12-character password
A common site minimum — ~78 bits, strong for everyday use.
Open tool15-character password
NIST-recommended minimum — ~96 bits, effectively uncrackable.
Open tool16-character password
The recommended sweet spot — ~100 bits of entropy.
Open tool32-character password
Maximum strength for banking, email, and wallets.
Open tool64-character password
Ultra-high entropy for keys and master credentials.
Open toolNo-symbol password
Letters and numbers only, for picky legacy systems.
Open toolBulk generator
Many passwords at once, with TXT / CSV / JSON export.
Open toolStrength checker
Paste any password and see its real strength.
Open toolPassword Strength Tips
- Use at least 12 characters (16+ recommended)
- Mix uppercase, lowercase, numbers and symbols
- Avoid personal information or common words
- Use unique passwords for each website
Privacy Protection
This tool works entirely in your browser. No passwords are stored, transmitted, or logged - ensuring complete privacy and security.
Why Use a Strong Password Generator?
Protection Against Hackers
Weak passwords are the #1 target for hackers. Using our strong password generator creates complex, unpredictable passwords that are extremely difficult to crack through brute force or dictionary attacks.
Data Security
Your personal and financial information is only as secure as your weakest password. Strong, unique passwords for each account ensure that a breach on one site doesn't compromise all your accounts.
Privacy Protection
Our password generator works entirely in your browser. No passwords are stored, transmitted, or logged - ensuring complete privacy and security for all your generated passwords.
Save Time
Creating truly random, secure passwords manually is time-consuming and error-prone. Our generator creates strong passwords instantly, saving you time while improving your security.
How long does it take to crack a password?
Entropy and estimated brute-force time for an all-character-types password, at 10 billion guesses/second (offline fast-hash attack).
| Length | Entropy | Strength | Time to crack |
|---|---|---|---|
| 12 chars | 78 bits | Strong | 479 thousand years |
| 16 chars | 103 bits | Very strong | longer than the age of the universe |
| 20 chars | 129 bits | Very strong | longer than the age of the universe |
| 24 chars | 155 bits | Very strong | longer than the age of the universe |
| 32 chars | 207 bits | Very strong | longer than the age of the universe |
Frequently Asked Questions
How secure are the passwords generated?
Our generator creates cryptographically secure random passwords using your browser's built-in crypto.getRandomValues() API. Passwords are generated entirely in your browser and are never transmitted over the internet.
How can I remember these complex passwords?
We recommend using a reputable password manager to securely store your generated passwords. This lets you use unique, complex passwords for every site without having to memorize them all.
How often should I change my passwords?
Security experts now recommend changing passwords only when there's reason to believe they've been compromised, rather than on a fixed schedule. Unique, strong passwords for each site plus two-factor authentication provide better security than frequent scheduled changes.
Is this password generator free to use?
Yes, our strong password generator is completely free to use with no limitations. We believe everyone should have access to tools that help improve their online security.
How long should a password be?
Aim for at least 16 characters. Length matters more than complexity: a 16-character password drawn from upper/lowercase letters, numbers and symbols has roughly 100 bits of entropy, which is infeasible to brute-force. NIST SP 800-63B sets a floor of 8 but allows much longer; we recommend 16+ and support up to 64.
Are online password generators safe?
A generator is safe if it runs entirely in your browser and never transmits what it creates. This tool generates every password locally using your browser's crypto.getRandomValues() API — nothing is sent to a server, logged, or stored. Avoid generators that produce passwords on a remote server.
Should I use a password or a passphrase?
Both can be strong. A random passphrase of 5–6 words is long, high-entropy, and easier to type or remember; a random character password is more compact. For accounts you log into manually, a passphrase is often friendlier; for everything stored in a password manager, a long random password is ideal.
What is the strongest password?
The strongest password is long, fully random, and unique to one account. There is no single "strongest" string — strength comes from unpredictability (entropy) and never reusing it. A 20+ character random password or a 6-word random passphrase stored in a password manager is effectively uncrackable by brute force.
Sources & Standards
Our guidance follows recognized password-security standards:
Written & reviewed by Andrew Ivanov, Fractional CTO. Last reviewed .