ToolNestFree Strong Password Generator
Create unguessable passwords in one click. Our free password generator builds cryptographically random passwords with your choice of length, numbers, and symbols — and shows the strength in bits of entropy so you know exactly how secure each password is.
✓ Free forever · ✓ No signup · ✓ Runs in your browser — your data never leaves your device.
How to Use the Password Generator
- Set your desired password length with the slider (16+ recommended).
- Choose whether to include numbers and symbols.
- Click 'Generate New' for a fresh cryptographically-random password.
- Copy it and store it in a password manager.
Why Use Our Password Generator?
- Crypto-grade randomness — uses your browser's secure random number generator, not Math.random.
- Entropy readout — see the actual bits of security, not a vague 'strong' label.
- Up to 64 characters — for passphrases and high-security accounts.
- Never transmitted — generated locally; we couldn't see your password if we wanted to.
Frequently Asked Questions
How long should my password be?
At least 16 characters for important accounts. Every extra character multiplies the guessing effort enormously.
Are generated passwords truly random?
Yes — the tool uses the Web Crypto API's secure random generator, the same primitive browsers use for TLS.
Should I use the same password everywhere?
Never. Use a unique generated password per site and store them in a reputable password manager.
Do you store my passwords?
No. Generation happens in your browser and nothing is sent or saved anywhere.
What is password entropy?
A measure of unpredictability in bits. 80+ bits is effectively uncrackable by brute force with current technology.