Argon2 and bcrypt Password Hash Benchmark
Compare Argon2id and bcrypt hash timing with safe cost limits.
⚡ Bun · OnlineDemo only
Do not use this tool as a password manager. Do not paste real production passwords.
Processed with Bun
This tool uses Bun.password on the server. Passwords are not stored.
More repetitions give a more stable median time.
Check a password against a hash that you already have.
Argon2, bcrypt, and scrypt hash strings are read.
About password hashing
Use this tool to compare hash cost settings. Higher cost values take more time and memory.
Do not use MD5, SHA-1, or plain digests to store passwords.
Paste a hash string that you already have to check a password against it. Bun reads the algorithm and the cost from the hash string, so an Argon2, a bcrypt, and an scrypt string all work.