File Hash Calculator
Compute MD5, SHA-1 and SHA-256 hashes for many files at once with drag and drop
拖拽文件到此处，或点击上传
支持批量上传，计算 MD5 / SHA-1 / SHA-256
About this tool
The file hash tool gives you a fingerprint for every file in a batch:
- Three algorithms: MD5, SHA-1 and SHA-256 side by side
- Batch processing: drop several files and they are hashed in parallel
- File details: name, size, type and last modified time
- Duplicate detection: files sharing a hash are highlighted
- Copy buttons: copy any single hash without selecting text
When to use it
- Verify a download against the official MD5
- Check whether two files hold identical bytes
- Find duplicate files across a folder
- Digital forensics and file integrity checks
How it works
- MD5: 128-bit hash, common for checksums but no longer safe for security
- SHA-1: 160-bit hash used by Git, increasingly considered weak
- SHA-256: 256-bit hash, the recommended choice for security
- Native speed: runs on the Web Crypto API (crypto.subtle) in the browser