Privacy
File Hash & Checksum Calculator
Upload a file to instantly calculate its MD5, SHA-1 and SHA-256 cryptographic hashes as text, so you can verify a download or confirm a file has not been tampered with.
Frequently asked questions
Why would I check a file checksum?
Comparing a file checksum against the value published by the source confirms the download is complete, authentic and has not been corrupted or modified.
Is this tool really free?
Yes — completely free, with no sign-up, no ads and no artificial limits.
Are my files kept or shared?
No. Processing happens on our servers, then the file is deleted immediately and an automatic cleanup removes any residue. Nothing is stored or sold.