File checksums
Calculate a checksum for a local file.
Runs in your browser
Drop a file hereAny file up to 25 MiB
OutputText · 0 bytes
Your result will appear hereAdd your input, choose the options and run the tool.
Your input stays on this device. Nothing is uploaded or saved.
About File checksums
Calculate a SHA checksum for a local file without uploading its contents.
When to use it
Compare a local file with an expected checksum without uploading its contents.
Choose a file → SHA-256 → Calculate checksum
Compare the entire hexadecimal digest with a trusted reference.How to use it
- Choose a file and SHA algorithm.
- Choose Calculate checksum.
- Compare or copy the hexadecimal digest.
Limits & privacy
Files up to 25 MiB are supported. A checksum detects differences; it does not prove who created a file or whether the file is safe.
Use this tool from the API reference or connect through the SDK, CLI, SSH, or MCP. Hosted calls share your plan allowances.