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MD5 Hash Generator — Free Online MD5 Checksum for Text & Files

Compute MD5 digest of text or files (up to 50 MB) in your browser. Output in hex or Base64.

Free No signup Client-side Privacy friendly Updated

— %

Hashing…

How to use

  1. 1 Pick Text or File mode.
  2. 2 Type / paste text, or choose a file (≤ 50 MB).
  3. 3 Pick output encoding (hex or Base64).
  4. 4 Copy the digest.

Why use this tool

  • Streams large files in 2 MB chunks — handles up to 50 MB in browser.
  • Output in hex (32 chars) or Base64 (22 chars).
  • Pure client-side — files never upload.
  • Powered by SparkMD5, the de-facto JS MD5.

Frequently asked questions

Is MD5 secure?

No — MD5 is cryptographically broken since 2004. Use it for checksums and de-duplication only, never for passwords, signatures, or anti-tamper in adversarial contexts. Use SHA-256 or stronger for security.

Will my file upload to your servers?

No — files are hashed in your browser. They never leave your device.

Why is the file size capped at 50 MB?

Larger files can exhaust browser memory on mobile devices. For very large files, use a CLI tool like `md5sum` instead.

What is MD5 Hash Generator?

An MD5 Hash Generator is a tool that computes the MD5 message digest of text or files, producing a fixed-length checksum that represents the input. It accepts files up to 50 MB and outputs the resulting digest in either hexadecimal or Base64 encoding. The computation runs entirely in the browser, so the data being hashed is processed client-side and is never uploaded to a server.

Features

Text & file hashing

Hash typed text or drop in a file up to 50 MB; the digest is computed locally.

Hex or Base64 output

Emit the 128-bit digest as a 32-char hex string or as Base64.

100% private

Runs client-side — the data you hash never leaves your browser.

Example

Input

Hello, Zerethon!

Output

7c39db384a8f69e87ccd029b81e0bba8

Common use cases

  1. 1

    Verify a download

    Compare an MD5 checksum published by a vendor to confirm a file downloaded intact.

  2. 2

    Deduplicate or key a cache

    Use the digest as a content fingerprint for dedup or cache keys where collisions aren't adversarial.

  3. 3

    Learn how hashing works

    See how any input maps to a fixed-length digest, and why one byte changed flips the whole hash.

Summary

Zerethon's MD5 generator computes the RFC 1321 message digest of text or files entirely in your browser, with hex or Base64 output. MD5 is fast and fine for non-security checksums (file integrity, deduplication, cache keys) but is cryptographically broken — never use it for passwords, signatures, or security. Free, no upload.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

References

Privacy

Your data never leaves your browser unless explicitly stated. MD5 Hash Generator runs entirely client-side — no server upload, no logging, no tracking of your input.

Compare

MD5 vs SHA-256 MD5 vs SHA-1 SHA-1 vs SHA-256

Learn the basics

What is Hash function?

How-to guides

How to generate an md5 hash

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