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Password Strength Analyser

Encoding & Encryption · Free Online Tool

Analyse password strength and estimate crack time.

By CoderNewbie Team

Checklist

  • Has uppercase (A-Z)
  • Has lowercase (a-z)
  • Has digits (0-9)
  • Has symbols (!@#$…)
  • Length is 12 or more
Strength—
Based on entropy and character variety.
0
Entropy (bits)
0
Length
0
Pool size

Estimated crack time

—

Assuming an offline attack at 10,000,000,000 guesses per second (average case: 2^entropy / 2 guesses).

Entropy First

Strength is driven by entropy — length times the base-2 log of the character pool — a more honest measure than character variety alone.

Realistic Crack Time

Times are estimated against a fast offline attack of 10 billion guesses per second, covering modern GPU hash-cracking rigs.

100% Private

Your password is never uploaded. All analysis runs locally in your browser — nothing leaves your device.

How to Use Password Strength Analyser

  1. 1Enter or paste your data into the input field.
  2. 2Select the desired encoding, hashing, or encryption options.
  3. 3Click the action button to process your data.
  4. 4Copy the result from the output field.

Features

  • ✓100% free — no signup, no subscription, no ads
  • ✓Runs entirely in your browser — data never leaves your device
  • ✓Fast and lightweight — instant results
  • ✓Cross-platform — works on desktop, tablet, and mobile

Frequently Asked Questions

Is my data safe?

Yes. All encoding, hashing, and encryption operations run entirely in your browser. Your data is never sent to any server.

Can I use this for passwords?

We recommend using the Password Generator for creating secure passwords, and Bcrypt Hash for storing password hashes. Never store plain-text passwords.

What hash algorithms are supported?

The Hash Generator supports MD5, SHA-1, SHA-256, and SHA-512. For HMAC signatures, use the HMAC Generator.

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Learn the concept

Learn the concept

Understand the programming ideas behind this tool.

View lessons