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Passphrase Generator

Generate memorable and secure passphrases

Click generate to create a passphrase

Generate a passphrase to see strength

Passphrase Options

EFF Large (7,776 words) gives ~12.92 bits of entropy per word and uses more memorable words; BIP39 (2,048 words) gives 11 bits per word.

Note: When the time-to-crack estimate shows "Eons", it means the passphrase is so complex that brute-force cracking would take longer than the age of the universe — effectively uncrackable with current technology. This is an approximation for illustrative purposes only, not an absolute guarantee of security.

How It Works

1. Select Your Options

Choose the number of words, separator style, and whether to add numbers or symbols to customize your passphrase.

2. Generate Randomly

Click generate to create a passphrase using cryptographically secure random word selection from our extensive dictionary.

3. Copy & Use

Copy your passphrase and use it for your accounts. Each generation creates a completely unique combination.

Why Use Passphrases?

Passphrases offer the perfect balance between security and usability. They're easier to remember than random character passwords while providing excellent protection against attacks.

Easy to Remember

Random words are much easier to recall than complex character combinations, reducing the need to write them down.

Highly Secure

Long passphrases with 4+ random words provide excellent entropy and resistance to brute-force attacks.

Length Over Complexity

A longer passphrase with simple words is often more secure than a shorter password with special characters.

Best Practices

Use Truly Random Words

Always generate passphrases with our tool rather than choosing words yourself. Human-selected words are predictable.

Unique for Each Account

Never reuse passphrases across different accounts. Each service should have its own unique passphrase.

Use a Password Manager

Store your passphrases in a reputable password manager for easy access and enhanced security.

Frequently Asked Questions

What is a passphrase and why use it?
A passphrase is a sequence of random words that creates a strong, memorable password. Passphrases like 'correct-horse-battery-staple' are easier to remember than random characters while providing excellent security. They're ideal for master passwords and accounts you access frequently.
Are passphrases as secure as random passwords?
Yes, when properly generated. A 4-word passphrase from our extensive dictionary provides over 77 bits of entropy, equivalent to a 12-character random password. Longer passphrases offer even more security while remaining easy to remember.
How many words should I use in my passphrase?
We recommend at least 4 words for most accounts and 5-6 words for high-security accounts like password managers or encryption keys. Each additional word exponentially increases the security of your passphrase.

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