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Passphrase Generator - Generate memorable secure passphrases from random words

Generate memorable secure passphrases from random words

Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-09

Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.

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Frequently asked questions

Why passphrases over passwords?

Passphrases are longer, easier to remember, and often more secure due to length.

How many words are enough?

4 words ≈ 50 bits entropy (strong). 5-6 words for high-security accounts.

What is the EFF word list?

Electronic Frontier Foundation's curated lists designed for secure, memorable passphrases.

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About this tool

This Passphrase Generator turns your inputs into practical results. Provide Number of Words, Separator, and Capitalization to calculate Generate New Passphrase and Time to Crack.

Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.