Secure Password Generator
Generate strong, memorable passphrases from random words.
ToolsSoup's Secure Password Generator builds strong, memorable passphrases from random words — the kind of credential that is both easy to remember and very hard to crack. Pick how many words you want, choose a separator, optionally capitalize each word and append a random number, and generate one or many passphrases at once. Everything runs locally in your browser using the cryptographically secure Web Crypto API, so nothing is ever sent to a server, logged, or stored.
What is a secure passphrase generator?
A secure passphrase generator strings together several random, unrelated words — like maple-river-thunder-ember — to create a credential that is long enough to resist brute-force attacks yet far easier to remember than a string of random symbols. This approach, popularized as "diceware," trades the cramped randomness of short character passwords for length: each extra word adds about nine bits of entropy. Because the words are chosen with crypto.getRandomValues, the same cryptographically secure source browsers use for encryption, the result is genuinely unpredictable.
How to create a strong passphrase
Generating a memorable, secure passphrase takes only a few seconds:
- Choose how many words to include — four is a good minimum, six or more for high-value accounts.
- Pick a separator such as a hyphen or space to make the passphrase readable.
- Optionally capitalize each word and add a random number to satisfy strict password rules.
- Click Generate, then copy your passphrase and store it in a password manager.
Passphrase vs. random password: which is better?
Both can be very secure — what matters is total entropy. A random-character password packs more entropy per character, but people tend to keep them short and then forget them. A passphrase reaches the same strength through length while staying memorable, which means you are far less likely to reuse it or write it on a sticky note. For accounts you must type or recall by hand, a passphrase is often the more practical secure choice. If you would rather generate a random string of characters, use our Random Password Generator instead.
Why use this secure password generator?
- 100% free with no ads, sign-up, or usage limits.
- Runs entirely in your browser — passphrases are never uploaded or stored.
- Uses the cryptographically secure Web Crypto API, not Math.random().
- Memorable word-based passphrases that are easy to type and recall.
- Adjustable word count, separator, capitalization, and a random number.
- Generate up to 50 passphrases at once with a live strength meter.
Frequently asked questions
Are these passphrases actually secure?
Yes. Words are chosen with crypto.getRandomValues, a cryptographically secure random source, from a list of hundreds of words. A four-word passphrase already has tens of bits of entropy, and each extra word makes it exponentially harder to guess.
How many words should I use?
Four words is a reasonable minimum for everyday accounts. For sensitive accounts such as email, banking, or your password manager, use six or more words to comfortably reach a Strong rating.
Why are passphrases easier to remember?
Human memory holds onto words and mental images far better than random symbols. A phrase like willow-rocket-amber-tiger forms a small story you can picture, while X7%kq2!z has no hook to remember it by.
Is anything sent to a server?
No. The entire tool runs in your browser. Your passphrases are generated locally and never transmitted, logged, or stored, so no one — including ToolsSoup — ever sees them.
How is this different from the Random Password Generator?
The Random Password Generator produces strings of random characters (letters, numbers, and symbols). This tool produces passphrases made of random real words, which are easier to remember and type. Choose whichever fits the account you are securing.