Free Online Argon2 Password Hasher Generate Argon2 password hashes — the modern standard.

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Argon2 Hash Generator

Generate Argon2 password hashes — the modern standard.

Enter password or text

Type or paste the password or text to hash.

View the hash output

Results appear in real time.

Copy the hash

Click Copy to copy the output.

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What Is Argon2 Hash Generator?

It won the 2015 Password Hashing Competition. OWASP-recommended. Variants: Argon2d (GPU-resistant), Argon2i (side-channel-safe), Argon2id (hybrid, recommended). Memory-hard. This demo uses iterative SHA-256. For production, use argon2 library.

Why Use Argon2 Hash Generator?

Fast, accurate processing
100% client-side — data never leaves your browser
Free online tool with no signup required
Mobile-friendly with 44px touch targets

Common Use Cases

Development

Hash passwords in application code.

Security

Secure password storage for authentication systems.

Education

Study memory-hard hashing and PHC winners.

Verification

Verify password hashes during login.

Technical Guide

Argon2 fills memory array using Blake2b. The hybrid variant: data-independent first half, data-dependent second. Less memory = quadratically more time. OWASP: Argon2id, 19 MiB, time 2, parallelism 1.

Tips & Best Practices

1
All processing happens in your browser
2
Results are deterministic for the same input
3
Use Copy button to quickly grab output
4
Works on mobile devices with touch-friendly interface

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Frequently Asked Questions

Q Is this tool free?

Yes, completely free with no signup required.

Q Is my data secure?

Yes. All processing is 100% client-side.

Q Does it work on mobile?

Yes, with responsive design and touch-friendly controls.

Q What browsers are supported?

All modern browsers including Chrome, Firefox, Safari, and Edge.

Q Can I use this offline?

The tool requires an initial page load but processes data locally.

About This Tool

Argon2 Hash Generator is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.