File Checksum

Compute SHA-1, SHA-256 and SHA-512 for any file — locally, never uploaded.

100% private — no uploads Security & Crypto ToolsFree & unlimited Read tutorial

See how it works

Watch a quick simulation of this tool in action — no file needed.

How to use File Checksum

Follow these steps — everything happens instantly in your browser.

  1. 1

    Step 1. Drop a file (up to 512 MB) onto the upload zone — any file type works.

  2. 2

    Step 2. Wait for SHA-1, SHA-256 and SHA-512 to be computed with crypto.subtle.digest.

  3. 3

    Step 3. Copy any digest with the Copy button next to it.

  4. 4

    Step 4. Paste an expected hash and pick which algorithm to compare against to verify integrity.

Why use this tool

Frequently asked questions

Everything you might want to know about file checksum.

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