File Hash Calculator
Calculate file hashes (MD5, SHA1, SHA256, SHA512) online. 100% Client-side processing for large files.
Click or Drop file here
Supports large files (ISO, ZIP, EXE)
MD5
SHA-1
SHA-224
SHA-256 STANDARD
SHA-384
SHA-512
Frequently asked questions
What are checksums used for?
A checksum verifies that a downloaded or transferred file is intact and unaltered. Compare the hash you compute against the one the publisher provides — if they match, the file is bit-for-bit identical.
Can it hash large files without uploading them?
Yes. Files are read and hashed locally in your browser, streamed in chunks, so even large files never leave your machine.
Which algorithms are available?
MD5, SHA-1 and SHA-256. For verifying integrity against a published checksum, use whichever algorithm the publisher used; SHA-256 is the modern default.