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File Checksum Calculator
Pick a file and get its MD5, SHA-1, SHA-256, SHA-512 and CRC32 checksums to compare against the values a publisher provides. The file is read locally — it is never uploaded, so even private files are safe to check.
Choose a file to calculate its checksums. The file is read locally in your browser — it is never uploaded.
—————Why verify a checksum?
Software publishers print a checksum next to downloads. If the file was corrupted in transit — or tampered with — its checksum will not match, even if a single bit flipped. Compare character by character: a full match means the file is bit-for-bit identical to the publisher's. Prefer SHA-256 when it is offered; MD5 matches are weaker evidence because MD5 collisions can be crafted.
Frequently Asked Questions
Is my file uploaded for this?
Never. Your browser reads the file locally and computes the hashes on your device.
The checksum does not match. What now?
Re-download the file — a mismatch usually means a corrupted or incomplete download. If it still mismatches, do not run the file and tell the publisher.
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