Checksum Calculator

Calculate the MD5, SHA-1, SHA-256, SHA-384 and SHA-512 checksum of any file or text, and check it against an expected hash.

1 · CHOOSE A FILE

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Drop any file here, or click to browse
The file is read locally — it is never uploaded

1 · ENTER TEXT

2 · CHECKSUMS

Choose a file or enter text to calculate its checksums.

What this tool does

A checksum is a short fingerprint calculated from every byte of a file. If even one byte changes, the checksum changes completely — so comparing it with the value a publisher lists proves your download is complete and untampered.

How it works

  1. Upload the file (or switch to Text and paste).
  2. All five hashes are calculated in your browser.
  3. Paste the expected hash to see instantly whether it matches.
Example: Download an installer whose website lists a SHA-256 of "9f86d0…", upload the file, paste that value into the compare box, and see "Match: SHA-256" — the file is exactly what the publisher released.
Yes. The checksum calculator is completely free, with no signup, no watermark, and no limit on how many times you use it.
No installation is needed — it runs entirely in your browser, on desktop or mobile, and works the same way on Windows, Mac, iOS, and Android.
Any file type works, as does pasted text (hashed as UTF-8). It produces MD5, SHA-1, SHA-256, SHA-384 and SHA-512 at once, so you can compare against whichever one a download page publishes.
No. Your files are read and processed inside your browser and never leave your device, so nothing is stored, shared, or used for anything else.
Yes — "checksum calculator" and "sha256 file hash" describe the same task. This page is built to handle that search directly, without redirecting you elsewhere.