Strong Password Generator
Generate uncrackable passwords instantly. Customize length, symbols, numbers. Passwords are generated locally — never sent to any server.
How to use in 3 steps
No learning curve. No tutorials. Just open and go.
Set your requirements
Choose password length (8–128 chars) and which character types to include: uppercase, lowercase, numbers, and symbols.
Click Generate
A cryptographically random password is generated instantly using your browser's crypto.getRandomValues — no server involved.
Copy and save
Click the copy button and immediately save it in a password manager. Never reuse passwords across different accounts.
Everything you need to know
Weak passwords remain the number one cause of data breaches. A password like 'password123' can be cracked in milliseconds. A random 16-character password with symbols would take the world's most powerful computer cluster over a trillion years to brute-force.
The critical requirement for a secure password generator is true randomness. SiteConversor uses the Web Crypto API (window.crypto.getRandomValues), which generates entropy from your device's hardware random number generator — the same source used by banking applications and VPN software.
Password reuse is the other major risk. When you use the same password on multiple sites, a breach on any one of them exposes all your accounts. The only practical solution is a unique strong password per account, managed by a password manager.
For enterprise users and developers: our password generator also supports generating API keys and random strings for development use — just increase the length and include alphanumeric characters to match your API key format requirements.
Frequently Asked Questions
How are passwords generated — is it truly random?expand_more
Yes. Passwords are generated using the Web Crypto API's crypto.getRandomValues(), which provides cryptographically secure random values. This is the same level of randomness used in security-critical applications. It is far superior to Math.random().
What password length should I use?expand_more
For most online accounts, 16–20 characters is excellent. For high-security applications (financial accounts, master passwords), use 24–32 characters. Modern cracking rigs require trillions of years to brute-force a random 20-character password.
Should I include symbols in my password?expand_more
Yes, whenever the service allows it. Symbols increase the character set from 62 (letters+numbers) to 95, which exponentially increases the time to crack the password. Avoid symbols like quotes, backticks, or backslashes if copy-pasting into terminal commands.
Is it safe to use an online password generator?expand_more
Yes, as long as the generation happens locally. SiteConversor's generator runs entirely in your browser — nothing is sent to our servers, logged, or stored. You can verify this by disconnecting from the internet and the tool will still work perfectly.
Should I use a password manager?expand_more
Absolutely. A strong, unique password for every account is only practical with a password manager. We recommend Bitwarden (free, open-source) or 1Password. Your generated passwords should go directly into your password manager.
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