Password vs Passphrase: Which Is More Secure?

Published June 7, 2026

Short answer: at equal strength, neither is more secure — what matters is entropy (total randomness), not whether you use words or characters. A random 5–6 word passphrase and a random 16-character password are both effectively uncrackable. The real difference is usability: a passphrase is far easier to remember and type. So use a passphrase for the handful of things you must memorize, and random character passwords (stored in a manager) for everything else.

What's the difference?

• Password — a short string of random characters, e.g. Tq7$kP2xZ!9rLm4w. Compact, but hard to memorize.
• Passphrase — a sequence of random words, e.g. correct-horse-battery-staple. Longer, but much easier to recall and type.

Both are just ways to reach the same goal: enough randomness that an attacker can't guess or brute-force it.

Side-by-side comparison

The security myth: "words are easier to guess"

A common worry is that passphrases are weaker because they use real words. That's only true if a human picks the words — favourite lyrics, a movie quote, a familiar phrase — because those follow guessable patterns. When a generator picks the words randomly from a large list, the math is brutal for attackers: with a 7,776-word list (the Diceware standard), a random 5-word passphrase has 7,776⁵ ≈ 28 quintillion combinations. Adding a sixth word multiplies that by another 7,776. Attackers know passphrases use words and still can't get through.

It comes down to entropy

Security researchers measure strength in bits of entropy — each bit doubles the work for an attacker. Roughly:

• A random 12-character password (all types): ~78 bits
• A random 16-character password (all types): ~105 bits
• A random 4-word passphrase: ~52 bits
• A random 5-word passphrase: ~65 bits
• A random 6-word passphrase: ~78 bits

Anything above ~75 bits is overkill for almost any account. A 6-word passphrase and a 12-character random password land in the same place — the choice is purely about whether you need to remember it. Curious how that translates to real attack time? See our guide on how long it would take to crack your password.

When to use which

• Use a passphrase for the few secrets you must memorize: your password-manager master password, your laptop/phone login, an encryption key you can't store anywhere. Make it 5–6 words (and if you're wondering whether fewer is fine, see is a 4-word passphrase strong enough?). Generate one with our passphrase generator.
• Use a random password for every online account — and let a password manager remember it. There's no memory cost, so go long: 16+ characters from our password generator, or 20 characters for high-value accounts.

You don't have to pick one approach for everything. The smart setup is: one strong passphrase you remember (the master password) unlocking a vault full of long random passwords you don't.

The bottom line

"Password vs passphrase" is the wrong fight. Both are secure when generated randomly; both are weak when you make them up yourself. Let a generator handle the randomness, use a passphrase where memory matters and random passwords everywhere else, and store everything in a password manager.

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