Checksum calculator

Get the MD5, SHA-1, SHA-256 or SHA-512 checksum of any file, and see at a glance whether it matches the published one. No account needed, whatever the file size.

Drop your document here
Choose files

or drag them here — you can also paste a file

no size limit imposed · up to 20 files
  • Your files stay yours

    Nothing is transmitted, nothing is kept

  • No watermark

    The free result is complete

  • No usage cap

    Unlimited with a free account

How it works

Three steps, nothing more.

  1. Step 01

    Drop one or more files, of any type.

  2. Step 02

    Tick the algorithms you need, then start the calculation.

  3. Step 03

    Compare with the expected checksum, copy it or export the list.

What sets it apart

Built for the result.

Verification in one paste

Paste the checksum published by the vendor, or its whole checksum list: each file is declared a match or not, down to the last character.

02

Files of several gigabytes

The file is read in chunks, never in one block: a disk image of several gigabytes is checked like a PDF, with progress shown for each file.

Privacy

Where your files are processed

With this tool, your file is not transmitted anywhere: not to us, not to any third party. We know neither its name, nor its contents, nor its size.

Nothing is kept, because nothing reaches us.

Frequently asked

What people ask us.

Another question? The contact address is at the bottom of the page.

It is a short string calculated from every byte of the file. Change a single byte and it changes completely: compared with the one the vendor publishes, it tells you your download is complete and has not been tampered with.

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