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Diceware Passphrase Generator - Online Secure Word-based Password

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Diceware Passphrase Generator

Generate strong, memorable passphrases using cryptographically secure random word selection.

Options
Loading full wordlist...
Your Passphrase
Click generate
Entropy: ~0 bits Strength: N/A
Use at least 6 words for strong security.

Frequently Asked Questions

Diceware is a method for creating passphrases using ordinary dice and a predefined word list. Each word corresponds to a series of five dice rolls (for the classic list of 7,776 words). The result is a random, high‑entropy passphrase that is both secure and relatively easy to memorize.

Diceware passphrases are easier for humans to remember and type, while still providing extremely high security when enough words are used. A six‑word passphrase from a 7,776‑word list offers about 77 bits of entropy, which is resistant to brute‑force attacks for decades.

This tool uses the JavaScript Crypto.getRandomValues() API, which is cryptographically secure. It does not rely on predictable math.random(). While rolling physical dice is the gold standard (no software trust required), our generator is safe for most personal use cases.

A minimum of 6 words is recommended (≈77 bits of entropy with the EFF large list). For highly sensitive accounts, 7‑8 words are even better. Each additional word multiplies the possible combinations, making it exponentially harder to crack.

We fetch the official EFF large wordlist (7,776 unique words) from a public GitHub repository. If the network request fails, a smaller backup list is used. The current list size is displayed in the options panel.

Yes, you can enable the “Append random number & symbol” option. This adds a little extra entropy (about 6‑7 bits) and may satisfy password policies that require special characters. However, the core strength still comes from the random words.
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