Hash with default parameters
password = MySecret123!memory = 65536iterations = 3parallelism = 4
Result: An Argon2id hash string with auto-generated salt.
Argon2id Password Hash Generator
Hash a password using Argon2id, the winner of the Password Hashing Competition (2015) and the recommended algorithm by OWASP and NIST. Argon2id resists both GPU and side-channel attacks by requiring significant memory, CPU time, and parallelism. This tool generates a random salt and produces a standard Argon2id hash string that can be verified by any Argon2id implementation.
Privacy: this tool processes all data entirely in your browser. Passwords and hashes are never sent to the server.
Enter your values and press Calculate — the result appears here.
Worked examples
Frequently asked questions
Why Argon2id over bcrypt or scrypt?
Argon2id won the Password Hashing Competition and is recommended by OWASP. It resists both GPU cracking attacks (via memory-hardness) and side-channel attacks (via its hybrid design). bcrypt and scrypt are still acceptable but lack Argon2id's side-channel resistance.
What do the parameters mean?
Memory cost: how much RAM each hash requires (higher = harder for GPUs). Time cost: number of memory passes. Parallelism: number of threads. Default parameters hash in ~200ms on modern hardware - adjust based on your server's performance.
Is my password sent to a server?
No. Hashing happens entirely in your browser. The password never leaves your device.
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