yukt.tools
local only

Password Strength Checker

Estimate password entropy from length, character sets, and weak patterns without sending or storing it.

Input

no network request
Password strength is evaluated locally by deterministic package logic; the password is not sent, stored, or returned.

Strength

very strong
score 4/4131.1 bits

Score 4/4 (very-strong) with about 131.1 bits of adjusted entropy. No obvious weak pattern was detected.

length
20
charset
94 symbols
entropy
131.1 bits
offline fast
centuries

Recommendations

  • Use a unique password for every account and store it in a password manager.
{
  "length": 20,
  "characterSets": [
    "lowercase",
    "uppercase",
    "numbers",
    "symbols"
  ],
  "charsetSize": 94,
  "rawEntropyBits": 131.1,
  "entropyBits": 131.1,
  "score": 4,
  "label": "very-strong",
  "crackTimes": {
    "onlineThrottled": {
      "bucket": "centuries",
      "display": "centuries",
      "guessesPerSecond": 10
    },
    "offlineSlowHash": {
      "bucket": "centuries",
      "display": "centuries",
      "guessesPerSecond": 10000
    },
    "offlineFastHash": {
      "bucket": "centuries",
      "display": "centuries",
      "guessesPerSecond": 10000000000
    }
  },
  "findings": [],
  "recommendations": [
    "Use a unique password for every account and store it in a password manager."
  ],
  "summary": "Score 4/4 (very-strong) with about 131.1 bits of adjusted entropy. No obvious weak pattern was detected.",
  "privacyNote": "Password strength is evaluated locally by deterministic package logic; the password is not sent, stored, or returned."
}