Checksum Calculator
SHA-1 / SHA-256 / SHA-384 / SHA-512 — computed locally in your browser
About this tool
Compute SHA-1, SHA-256, SHA-384 and SHA-512 checksums of a file. Free online checksum calculator — runs in your browser, files never uploaded. Checksum Calculator runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.
What this tool does not do
- Checksum Calculator is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.
How do I use this tool?
How do I use Checksum Calculator?
Open Checksum Calculator, enter or paste your input, and copy the result. The page works without an account.
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