Passphrase Generator
Memorable, high-entropy phrases
Words are chosen with the Web Crypto API, entirely in your browser — nothing is sent or stored.
What Is the Passphrase Generator?
The Passphrase Generator creates memorable, high-entropy passphrases from random words — the Diceware approach — that are far easier to type and remember than a random string yet just as strong. Choose the number of words and separators, and get a passphrase generated securely in your browser, ideal for master passwords and accounts you log into often.
Key Features
Why Passphrases Beat Passwords
A passphrase of several random words is both stronger and easier to remember than a typical complex password. Four or five truly random words produce enormous entropy while remaining human-friendly to type. Because the words are chosen randomly rather than by you, the result avoids the predictability that weakens self-made passwords.
How Diceware Works
Diceware selects words at random from a large wordlist, giving each word a known amount of entropy. Stringing several together creates a passphrase whose strength you can quantify precisely. This generator automates that process securely, so you get a memorable phrase with measurable, brute-force-resistant strength.
Common Use Cases
- Creating a memorable master password for a manager
- Securing accounts you log into frequently
- Generating a strong yet typeable encryption passphrase
- Replacing a weak password with something memorable
Frequently Asked Questions
Are passphrases really as secure as passwords?
Yes, often more so. A passphrase of four to six truly random words has very high entropy, making it extremely hard to brute-force, while being far easier to remember and type than a random character string.
How many words should I use?
Four words is a reasonable minimum for most accounts; five or six is recommended for high-value uses like a password-manager master password or disk encryption.
Why are random words better than a phrase I make up?
Self-made phrases tend to follow predictable grammar and use common words, which attackers exploit. Randomly selected words remove that predictability, giving the passphrase its full theoretical strength.
Is the passphrase generated securely?
Yes. Words are selected using your browser’s cryptographically secure random source, and the passphrase is generated locally and never transmitted.
Can I add numbers or capitals?
Yes, you can include numbers and capitalization for sites that require them, which adds a little entropy on top of the words themselves.
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