File Hash Checker
Verify any download before you trust it. Drop a file in and get its SHA-256, SHA-1 and SHA-512 hashes instantly — free, in your browser, nothing uploaded.
The file is hashed only on your device with Web Crypto — it is never uploaded. Works with installers, ISOs, ZIPs and any other file.
File hashes will appear here
Hashes
SHA-256: —
SHA-1: —
SHA-512: —
Compare the SHA-256 with the hash the publisher lists on their download page — if even one character differs, the file is not the one they published. Related searches: check file hash online free, SHA-256 checksum checker, verify download hash, MD5 SHA checker online.
How to use
- Choose any file from your device — an installer, ISO, ZIP or anything else.
- Click Calculate Hashes. The file is hashed only on your device.
- Compare the SHA-256 shown here with the hash on the publisher's download page. One different character means the file is not genuine.
Frequently asked questions
How do I verify a download with a hash?
Publishers list a SHA-256 hash on their download page. Run the file through this free file hash checker and compare — if the two hashes match exactly, the download is genuine and complete.
What is the difference between SHA-256, SHA-1 and SHA-512?
All three are fingerprints of a file: change one byte and the hash changes completely. SHA-256 is the modern standard publishers use; SHA-1 is older and weaker; SHA-512 is longer and stronger. This tool shows all three at once.
Is my file uploaded anywhere?
No. Hashing happens only in your browser with the Web Crypto API. Even a 4 GB file never leaves your device.
Can I check a hash without installing software?
Yes — that is the point of this tool. Windows, Mac and Linux all need a terminal command or extra app for hashes; here it is one click in the browser.