🛡️ Cryptographically Secure CSPRNG • Offline Zero-Knowledge Execution

Strong Password Generator
& Passphrase Maker Free

Generate unhackable random passwords, memorable Diceware passphrases, and secure PINs. Instant entropy rating, brute-force crack-time estimation, and bulk export. 100% private.

Generating...
Estimated Time to Crack
14 Trillion Years
Cryptographic Entropy
128 Bits (Extremely Strong)
Password Length 20
📦 Need Multiple Passwords? Open Bulk Generator ▼
Generate Count:

Why Use a Cryptographically Secure Password Generator?

In an era of automated brute-force attacks and daily massive database breaches, human-created passwords are no longer sufficient. Our Secure Password Generator utilizes your device's native Web Crypto API to generate truly random, uncrackable credentials instantly inside your browser. Because everything runs locally, your passwords are never transmitted over the internet or saved to any database.

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100% Client-Side Privacy

Most online generators ping a server to fetch your password. We don't. We use window.crypto.getRandomValues to calculate entropy directly on your CPU. It is mathematically impossible for us to know what password you generated.

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Diceware Passphrases

Need a master password for your vault? Switch to the Passphrase Generator. We combine random English words (e.g. solar-titan-orbit-river) to create credentials that are incredibly hard for computers to guess but very easy for humans to type and remember.

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Bulk CSV & TXT Export

Perfect for IT administrators setting up company accounts or rotating server keys. Generate up to 50 passwords at once and instantly export them as a raw text file or a comma-separated CSV spreadsheet.

How long should a strong password be?

Password security is entirely dependent on mathematical entropy—which is directly tied to length and character variety.

Security Knowledge Base

Frequently Asked Questions

Are passwords generated here stored or transmitted anywhere? +
Never! This tool executes 100% locally inside your web browser using JavaScript's native Web Crypto API (window.crypto.getRandomValues). Not a single character is ever transmitted across the internet, logged, or stored on our servers.
What makes a password truly secure against hackers? +
Length and entropy. A 20-character password with mixed cases, numbers, and symbols has over 120 bits of cryptographic entropy. Modern GPU clusters cracking at 100 billion guesses per second would still take trillions of years to brute-force test all combinations.
Should I use a memorable passphrase instead of a random string? +
Yes! For master passwords (such as your 1Password, Bitwarden, or Apple ID), passphrases made of 4-6 random dictionary words (e.g. 'purple-elephant-rocket-coffee-92') are vastly easier to type and remember, while providing equal or greater mathematical security.