Drop any file to compute its MD5, SHA-1, SHA-256 and SHA-512 checksums. Paste the publisher's hash to instantly verify a download wasn't tampered with.
🔒 Runs entirely in your browser — your files never leave your device
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Drop any file here, or click to select
Works with installers, archives, ISOs, documents — any file type No upload — everything is computed locally in your browser
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MD5—
SHA-1—
SHA-256—
SHA-512—
Verify against publisher's checksum
Paste the hash from the download page — we'll automatically match it against the correct algorithm.
ℹ️ Which hash to use? Always use the algorithm the publisher specifies — usually SHA-256 or SHA-512. MD5 and SHA-1 are included for legacy compatibility but are not considered cryptographically secure for new use cases.
When to use this
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Verify a downloadDownloaded software, an ISO, or a zip? Compare its hash to the checksum the publisher posted to confirm it's genuine and unmodified.
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Check if two files matchHash both files separately. If the SHA-256 values are identical, the files are byte-for-byte the same — regardless of filename.
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Fingerprint a documentHash a contract or important file. If the hash ever changes, you know the file was modified after you recorded it.
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Detect silent corruptionLarge file transfers and backups can silently corrupt data. A mismatched checksum reveals it immediately.
Which algorithm?
SHA-256 / SHA-512 — use these. Secure, widely supported.
MD5 / SHA-1 — legacy only. Fast to check but not secure for new use cases.