SHA-256 Hash Calculator
Calculate the SHA-256 checksum of any file in your browser. Compare against a known hash to verify downloads and transfers.
Features
SHA-256 checksum calculation
Instant browser-based computation
Hash comparison tool
Supports all file types
How to Use
- Open the File Hash Checker
- Upload or drag-and-drop a file
- Copy the SHA-256 hash
- Paste expected hash to verify
FAQ
How is the hash calculated?
Using the Web Crypto API's SubtleCrypto.digest() method, which provides native browser-level SHA-256 computation.
Can I hash large files?
Yes, the tool reads the entire file into memory. Files up to several hundred MB typically work well.
What format is the hash output?
The hash is displayed as a 64-character lowercase hexadecimal string.
Is my file sent anywhere?
No. The file is processed entirely in your browser using the Web Crypto API.