Password Generator
Create strong random passwords and passphrases with rules.
Files and text are processed locally in your browser. Tools that must reach the network say so explicitly.
About the Password Generator
Create strong, unpredictable passwords. The Toolcenter Password Generator builds random character passwords (choose length and which character sets, and exclude look-alikes) or memorable passphrases (word count, separator, capitalisation, number). It uses your device’s cryptographic random source and estimates entropy in bits. Nothing is transmitted or logged.
How to use it
- 1Choose random-characters or passphrase mode.
- 2Set the length, character sets or word count.
- 3Read the strength meter and entropy estimate.
- 4Copy the password and store it in a password manager.
Key features
- Random character and passphrase modes
- Length up to 64, all character sets toggleable
- Exclude ambiguous characters (Il1O0)
- Entropy estimate and strength meter
- Cryptographic randomness, nothing sent
Frequently asked questions
How long should a password be?+
16+ random characters, or a 4-5 word passphrase, gives strong protection. The entropy readout helps you judge.
Are these passwords stored or sent anywhere?+
No. They are generated in your browser with crypto.getRandomValues and never leave your device.
What does entropy in bits mean?+
A rough measure of unpredictability. 60+ bits is strong; 80+ bits is very strong against offline attacks.
Passphrase or random string?+
Passphrases are easier to type and remember at the same strength; random strings are more compact.
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