Online Text & File Checksum Calculator
Generate MD5, SHA-1, SHA-256, and other hash values directly in your browser
Text Input
File Upload
Drag and drop your file here, or click to browse
About Checksums
A checksum is a value that allows you to verify the integrity of a file or text. It's calculated through a cryptographic hash function that generates a unique value based on the content.
Common applications include:
- Verifying downloaded files haven't been corrupted
- Confirming data integrity during transmission
- Basic file identification
- Finding duplicate files
This tool works entirely in your browser - your files are never uploaded to any server. All processing is done locally using JavaScript.