Password Entropy Calculator

How long would it take to crack a password?

Entropy 10.6 bits Common password
Strength Very Weak
Length 11 chars
Breaches 3189 Common password
Hash Algorithm Attacker GPUs 1 GPU10 GPUs100 GPUs1k GPUs10k GPUsNation State
MD5 Instant Instant Instant Instant Instant Instant
SHA-1 Instant Instant Instant Instant Instant Instant
SHA-512 Instant Instant Instant Instant Instant Instant
PBKDF2 Instant Instant Instant Instant Instant Instant
bcrypt Instant Instant Instant Instant Instant Instant
scrypt Instant Instant Instant Instant Instant Instant
Argon2id Instant Instant Instant Instant Instant Instant

How to read this table

Each cell shows the estimated time to crack the password. Rows represent different password hashing algorithms (stronger ones like Argon2id take longer to crack). Columns represent the attacker's computing power (more GPUs = faster cracking). Hash rates are based on RTX 5090 benchmarks with recommended hash parameters. We use haveibeenpwned.com to securely check for password breaches and zxcvbn to estimate entropy. Hosted on Github Pages.