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Hash generator

Compute 15 hashes (MD5, SHA-256, SHA-3, CRC-32…) of a text or a file.

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This free hash generator turns any text into a cryptographic hash (MD5, SHA-1, SHA-256 and more). A hash is a fixed-length fingerprint used to verify file integrity, store passwords safely and generate checksums.

How to use it

  1. Type or paste the text to hash.
  2. Choose the algorithm (e.g. SHA-256).
  3. Copy the resulting hash.

Frequently asked questions

What is a hash?

A hash is a one-way function that turns any input into a fixed-length string. The same input always gives the same hash, but you can't recover the input from it.

What's the difference between MD5 and SHA-256?

MD5 is fast but broken for security — use it only for non-critical checksums. SHA-256 is a modern, secure hash recommended for integrity and signatures.

Can a hash be reversed or decrypted?

No — hashing is one-way by design. The only 'attack' is guessing inputs and comparing hashes, which strong algorithms and long inputs make impractical.

What are hashes used for?

Verifying downloads and file integrity, storing passwords securely, deduplicating data, and creating digital signatures and checksums.

What is Hash generator?

Compute 15 hashes (MD5, SHA-256, SHA-3, CRC-32…) of a text or a file.

What does it take into account?

It factors in MD5, SHA-256, SHA-3, CRC-32. Change any of them and the output follows immediately.

When would I actually use this?

Verifying a download matches its published checksum, comparing two files without reading them, and generating a signature for an API request.

What is the most common mistake?

Hashing a password with a fast algorithm. MD5 and SHA are built to be quick, which is exactly wrong for passwords — those need a deliberately slow function like bcrypt, scrypt or Argon2.

How is Hash generator different from FNV-1a Hash Generator?

They sit next to each other but answer different questions: FNV-1a Hash Generator is the one to open when you need it to generate a FNV-1a hash of any text instantly in your browser, with hex or Base64 output. Fast non-cryptographic 64-bit hash. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

MD5 Hash Generator is the closest one after this: Generate a MD5 hash of any text instantly in your browser, with hex or Base64 output. 128-bit digest — fast, but not for security.

Further reading

All guides →
ExplainerWhat Is a Hash Function? (MD5, SHA-256)A hash function turns any input into a fixed-size fingerprint. Here's what it does, its key properties, common uses, and which algorithms are safe.ExplainerWhat Is a UUID (and When to Use It)?A UUID is a 128-bit identifier that's unique without any central authority. Here's what it looks like, why it's useful, the versions, and when to use one.ExplainerWhat Is Base64 Encoding?Base64 turns binary data into safe text. Here's what it does, why it exists, why it isn't encryption, and the size cost it adds.How-toMarkdown: A Beginner's GuideFormat plain text with a few symbols: # for headings, ** for bold, - for lists. Here's what markdown is, the core syntax, why it's everywhere, and the gotchas.ExplainerWhat Is a JWT (JSON Web Token)?A JWT is a compact, signed token used to carry identity between services. Here's its three parts, how it's used for auth, and its security limits.ExplainerWhat Is a Cron Expression?A cron expression schedules a task to run automatically at set times. Here's what it's for, its five fields, how to read one, and the common gotchas.