Strong Password Generator
Free strong password generator. Create secure, random passwords with adjustable length, character sets and an entropy meter — generated locally with crypto-grade randomness.
Character sets
Entropy estimate
~129 bits
Excellent — resists brute force
How to use Strong Password Generator
- 1
Choose a length (16+ recommended).
- 2
Select the character sets you want: uppercase, lowercase, numbers, symbols.
- 3
Optionally exclude ambiguous characters like 0/O and 1/l.
- 4
Generate — then copy your favorite password into a password manager.
Key features
Crypto-grade random generation
Up to 128 characters
Custom character sets
Exclude ambiguous characters
Entropy & strength meter
Generate up to 10 at once
Pro tip
Pair your password manager with a passphrase for master accounts: 4–5 random words give enormous entropy and are easy to type.
Strong Password Generator — FAQ
Aim for at least 12 characters using all character types — 16+ is better for important accounts. Length beats complexity in practice.
Entropy measures how many guesses an attacker would need, in bits. 50+ bits resists online attacks; 80+ bits is effectively uncrackable by brute force.
Never. Use a unique password per account and store them in a password manager — that way one breach cannot cascade to your other accounts.
No. Generation happens locally in your browser and nothing is transmitted, logged or stored.
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