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Security

Passphrase Generator

Create strong passphrases from random words. Word-based phrases are easier to remember than random characters while providing strong entropy against brute-force attacks.

Configure passphrase settings

Generated output

Set options and click Generate to create a passphrase.

How it works

The generator selects words at random from a curated list of common English words using the Web Crypto API (crypto.getRandomValues) for unbiased selection. Each word is independently chosen, then joined with your selected separator. If capitalisation is enabled, the first letter of each word is uppercased. If numeric suffix is enabled, a random two-digit number is appended. A 4-word passphrase drawn from a 2,000-word list has over 16 trillion possible combinations — far stronger than a typical 8-character password.

Practical example

You want a passphrase for your email account — easy to type on a phone but too complex to guess. Set 5 words, hyphen separator, capitalise words, and enable numeric suffix. The result might be "Silver-Climb-Frost-Motion-Blend-74". This is memorable, around 30 characters long, and has hundreds of trillions of possible combinations.

Frequently asked questions

Answers to common questions about this generator and how it works.

Are passphrases safer than short passwords?

In most cases, yes. A longer passphrase with multiple random words usually offers stronger brute-force resistance and is easier to remember.

Can I use spaces instead of symbols?

Yes. Spaces can be secure when systems allow them. If a site blocks spaces, switch to hyphen or underscore separators.

Should I reuse passphrases?

No. Use a unique passphrase per account to reduce risk if one service is compromised.

How many words should I choose?

Four words are a practical minimum. Five or more words are better for high-value accounts.

Is adding a number useful?

Yes. Appending a numeric suffix can increase entropy while keeping the phrase memorable.

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