UtilityKit

500+ fast, free tools. Most run in your browser only; Image & PDF tools upload files to the backend when you run them.

File Hash Multi (MD5, SHA-1, SHA-256, SHA-512)

Compute MD5, SHA-1, SHA-256, and SHA-512 of any file in your browser

About File Hash Multi (MD5, SHA-1, SHA-256, SHA-512)

File Hash Multi on UtilityKit computes MD5, SHA-1, SHA-256, and SHA-512 checksums of any file at once, entirely in your browser. SHA-1, SHA-256, and SHA-512 use the browser's built-in Web Crypto API (window.crypto.subtle.digest) for speed, while MD5 is computed by a custom pure-JS implementation since Web Crypto deliberately omits MD5 due to its cryptographic weakness. Drop a file up to 256 MB and you'll see all four digests appear with one-click Copy buttons. A verify field lets you paste any expected hash — the tool checks it against all four computed digests and tells you which one matches. Useful for verifying open-source downloads, confirming a file copied across machines is bit-identical, or matching a known-good signature published by a vendor. Everything runs locally — your file is never uploaded.

Why use File Hash Multi (MD5, SHA-1, SHA-256, SHA-512)

  • Four Hashes at Once: Compute MD5, SHA-1, SHA-256, and SHA-512 in a single drop instead of running four separate tools.
  • Browser-Only: Files are read with the File API and hashed locally — nothing reaches a server.
  • Auto-Verify: Paste any expected hash and the tool figures out the algorithm and tells you whether it matches.
  • Web Crypto Speed: SHA-1, SHA-256, and SHA-512 use the browser's native Web Crypto, which is hardware-accelerated on most devices.
  • MD5 Despite Web Crypto: Includes a hand-rolled MD5 because the Web Crypto API deliberately omits MD5 — handy when a vendor still publishes only an MD5 signature.
  • Free & Unlimited: No signup, no email, no daily cap, no watermarks.

How to use File Hash Multi (MD5, SHA-1, SHA-256, SHA-512)

  1. Drop a file onto the dropzone or click to pick one (up to 256 MB).
  2. The tool reads the file into memory and computes MD5 (custom JS), then SHA-1, SHA-256, and SHA-512 (Web Crypto API).
  3. All four hashes display in lowercase hex with one-click Copy buttons.
  4. To verify a download, paste the expected hash (in any algorithm) into the Verify field — the tool finds which algorithm matches automatically.
  5. A green Match badge confirms the file is bit-identical to the source; a red No Match badge means corruption, tampering, or the wrong file.
  6. Drop another file at any time to start over — there is no limit and nothing is cached.

When to use File Hash Multi (MD5, SHA-1, SHA-256, SHA-512)

  • When verifying an open-source download (Linux ISO, container image, signed release) against the publisher's listed checksum.
  • When confirming a file copied between machines is bit-identical and not silently corrupted.
  • When matching a file against a known-bad hash from a security advisory.
  • When generating a hash to publish alongside your own release artifact.
  • When reproducing an existing toolchain that prints checksums for build outputs.
  • When checking whether two seemingly identical files are actually different bytes.

Examples

Verify a Linux ISO

Input: ubuntu-24.04-desktop-amd64.iso (5 GB) — note: tool caps at 256 MB, smaller test images only

Output: SHA-256 matches Ubuntu's published checksum — green Match badge confirms the download is authentic.

Confirm two files are identical

Input: Drop file-a.bin then file-b.bin

Output: Compare the displayed SHA-256 hashes side by side — identical hash means bit-identical files.

Tips

  • Verify in either direction — compute a hash here, paste it on a different machine, or paste an expected hash to verify a download here.
  • If MD5 matches but SHA-256 does not (or vice versa), suspect a corrupted listing — recompute on the source system and reconcile.
  • Use SHA-256 for everything new. MD5 and SHA-1 are kept here for compatibility with older release manifests only.
  • When the verify field shows No Match, double-check you pasted the right hash for the right algorithm — vendors sometimes publish multiple checksums on one page.
  • Pair with the Hex & Binary Viewer to inspect a file's first bytes and confirm format before hashing — saves time when chasing 'wrong file' errors.

Frequently Asked Questions

Is my file uploaded anywhere?▾
No. File Hash Multi reads the file with the File API and runs all four hash computations locally — Web Crypto for SHA family, custom JavaScript for MD5. The bytes never leave your browser.
Why is MD5 still included? Isn't it broken?▾
MD5 is cryptographically broken — collisions are easy to forge — so it should never be used for security signatures on new releases. But many older projects still publish MD5 checksums for download integrity verification, so we include it for compatibility.
What is the maximum file size?▾
256 MB. The whole file is loaded into memory, so very large files may be slow on low-RAM devices. SHA family is hardware-accelerated; MD5 is the slowest of the four.
Do the SHA hashes match standard CLI output?▾
Yes. The tool produces the same lowercase hex digests as md5sum, sha1sum, sha256sum, and sha512sum on Linux, or shasum -a 256 on macOS.
How does the verify check work?▾
Paste an expected hash (any of the four algorithms) into the Verify field. The tool normalizes whitespace and case, then checks whether it matches MD5, SHA-1, SHA-256, or SHA-512. If any matches, it tells you which one.
What if my hash has uppercase or extra whitespace?▾
The verify field auto-trims whitespace and lower-cases the input before comparing. So 'A1B2 C3D4' and 'a1b2c3d4' are treated as the same hash.
Is SHA-512 worth running over SHA-256?▾
For pure file integrity, SHA-256 is sufficient — both are uncracked. SHA-512 is faster on 64-bit hardware in some implementations and produces a longer, less collision-prone digest, so it is preferred for very long-lived archival hashes.
Is the tool free?▾
Yes — completely free, no signup, no email, no ads, and no daily limit.

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Glossary

MD5
A 128-bit hash function from 1992. Cryptographically broken — collisions are trivially forgeable — but still used for non-security file integrity checks.
SHA-1
A 160-bit hash function from 1995. Theoretical collisions exist (the SHAttered attack in 2017 produced one). Deprecated for security use; still common in legacy release manifests.
SHA-256 / SHA-512
Members of the SHA-2 family from 2001. 256-bit and 512-bit digests respectively, both currently considered secure for collision-resistance and standard for new release signatures.
Hash
A short, fixed-size fingerprint of any input, computed by a one-way function. Identical inputs always produce identical hashes; even a one-bit change produces a wildly different hash.
Web Crypto API
The browser's built-in cryptography interface (window.crypto.subtle). Provides hardware-accelerated SHA-1, SHA-256, SHA-384, and SHA-512 — but deliberately not MD5.