Skip to content

Argon2id hash generator.

Type a password and read its Argon2id hash, salted with 16 random bytes, at the memory cost you pick. Argon2id is the recommended password hash: memory-hard, the Password Hashing Competition's winner and RFC 9106; everything runs in your browser and nothing is uploaded.16 salt bytes97+ characters2015 published0 bytes uploaded

Get ProHash a password

Add shadcn.io to your AI agent. · Pro It installs blocks, icons and templates in your design system from a prompt, with Pro.

Set up MCP

Argon2id hash generator.

Loading the tool…

Need the UI around it? With Pro, your AI agent builds the form, the result card and the rest of the page from a prompt.

Get Pro

How it works

4 steps, no account. It runs in your browser and nothing is uploaded.

  1. Enter the password

    Type or paste the password, or drop a file onto the input; the tool waits for a pause before it starts.

  2. Pick the algorithm and cost

    Argon2id is the default; switch to Argon2d and bcrypt, and pick the cost the login can afford.

  3. Read the encoded hash

    The encoded hash carries the salt and the parameters; press Rehash for a fresh salt.

  4. Verify, copy or download

    Paste a stored hash to check it against the input, or copy and download the new one.

Password hashes against each other

A password hash is slow on purpose. It costs the server a few milliseconds per login and an attacker the same per guess, billions of times over.

  • Argon2id

    2015, RFC 9106, the Password Hashing Competition's winner. Memory-hard. The first pass data-independent, the rest data-dependent: resists GPUs and side channels both. The recommendation.

  • Argon2d

    The data-dependent variant: the strongest against GPU cracking, but its memory accesses depend on the password, so a shared machine can leak timing. For mining and proofs of work.

  • Argon2i

    The data-independent variant: safe against side channels, weaker against GPUs for the same cost. Mostly superseded by Argon2id.

  • bcrypt

    1999, from Blowfish. A cost factor doubles the work each step; a 72-byte input limit; 60-character hashes. Still sound, still everywhere.

  • scrypt

    2009, memory-hard before Argon2 existed. Tunable N, r, p. In Tarsnap, Litecoin and many password managers.

  • PBKDF2

    2000, RFC 2898: HMAC iterated many thousand times. Not memory-hard, so GPUs crack it fast; kept where FIPS compliance requires it.

  • SHA-256

    Fast by design, which is the problem: a GPU tries billions a second. Fine for integrity, never for storing passwords.

  • MD5

    Faster still, and broken. Unsalted MD5 password tables are the breaches you read about.

Related tools

Nearby in the hash generators. Every one free, in the browser.

Pricing

Build it with Pro

The tool is free. Pro adds 6,000+ blocks, premium templates and the MCP server, so your AI editor builds the product around it.

See full pricing

4.9/5 out of 5 · 150+ reviewsfrom 150+ founders and developers.

Billed once a year in USD. Cancel anytime.

Individual

For personal projects & open source

$32instead of $49/mo

$389 billed yearly

  • How many people can use the license.Seats: 1 seat
  • Client work, SaaS products and anything you charge for.Commercial use: Personal & open source only
  • Production-ready React sections: hero, pricing, features, dashboards and more.Pro blocks: 6,000+ blocks
  • Complete multi-page sites you can ship as they are.Templates: All 14 templates
  • React icons from every major library, installable with one command.React icons: 294k+ icons
  • Presets that restyle every block, in light and dark.Themes: All 59 themes
  • Lets your AI editor search, preview and install blocks for you.MCP server: Basic usage
  • Priority requests are answered first.Support: Standard

Team

Most popular

For freelancers, agencies & startups

$66instead of $99/mo

$789 billed yearly · ≈ $13/dev/mo

Everything in Individual, plus

  • How many people can use the license.Seats: Up to 5 seats
  • Client work, SaaS products and anything you charge for.Commercial use: Included
  • Lets your AI editor search, preview and install blocks for you.MCP server: High usage
  • Priority requests are answered first.Support: Priority

Organization

For companies with larger teams

$132instead of $199/mo

$1,589 billed yearly

Everything in Team, plus

  • How many people can use the license.Seats: Unlimited seats
  • Lets your AI editor search, preview and install blocks for you.MCP server: Unlimited usage
  • Secure checkout via Stripe
  • Code lives in your repo
  • Keep what you've shipped if you cancel
  • License terms

Questions and answers

Before you trust the result: what to know about the format, the limits and your data.

Build the product around it

Every block, template and icon, installed by your AI agent in your theme. The tools stay free.

Get Pro

Cancel anytimeKeep what you've shipped if you cancel