Password vs Passphrase: Which Should You Use?
Compare passwords and passphrases. Learn when to use each, how to estimate their strength, and which is best for your accounts.
For decades, security advice focused on complexity: mix uppercase, lowercase, numbers, and symbols, and change your password every few months. More recent research shows that length and unpredictability matter far more than complexity alone. That insight has made passphrases increasingly popular. But should you use a password or a passphrase? The answer depends on the situation.
What is a password?
In this context, a password is a relatively short string of characters that may include letters, numbers, and symbols. Examples include xK9#mP2$ or Tr0ub4dor&3. When generated randomly, passwords can be very secure. When created by humans, they often contain predictable patterns.
What is a passphrase?
A passphrase is a longer sequence of words, often separated by spaces or symbols. A classic example is correct-horse-battery-staple. Passphrases can be easier to remember and type because they form a mental image. They are also long, which gives them high entropy.
Strength comparison
A randomly generated 16-character password and a six-word random passphrase can have similar entropy. The difference is usually usability. Passphrases shine when you need to type the credential manually or remember it without a manager. Random passwords are ideal when a password manager will fill them in automatically.
You can generate both styles with our tools. Use the Password Generator for random strings and the guidance on our Passphrase Generator page for word-based credentials.
When to use a password
- The account is managed by a password manager.
- The website has strict length or character limits.
- You will rarely type the credential manually.
When to use a passphrase
- You need a master password for your password manager.
- You must remember the credential without software help.
- You want something easy to type on mobile devices.
Making the right choice
For most people, the best approach is to use a password manager and let it generate random passwords for every site. Then use one strong passphrase as the master password to unlock the manager. Products like 1Password and Bitwarden make this workflow simple.
Conclusion
Both passwords and passphrases can be secure if they are long, random, and unique. Passphrases tend to be more memorable, while random passwords fit better into automated workflows. Choose the right tool for the job, and never reuse either across accounts.