File Checksum Generator
Calculate MD5, SHA-1, SHA-256, and SHA-512 hashes for any file directly in your browser. All processing is client-side — your files never leave your device.
Drop a file here or click to browse
All processing happens in your browser
What is a File Checksum?
A checksum (or hash) is a fixed-size string computed from a file's contents using a cryptographic algorithm. If even a single byte changes, the checksum changes completely. This makes checksums ideal for verifying file integrity after downloads, detecting tampering, and comparing file versions.
MD5
128-bit
Fast but not collision-resistant. Use for quick checks only.
SHA-1
160-bit
Deprecated for security. Still used in legacy systems.
SHA-256
256-bit
Industry standard. Used in TLS, Bitcoin, and code signing.
SHA-512
512-bit
Strongest option. Preferred for high-security applications.