YoSin Tools

SHA3-256 File Hash Calculator

Compute the SHA3-256 checksum of any file directly in your browser. Drop a file to verify integrity instantly — no upload, no server, complete privacy. Output is a 64-character hex string.

File Input
File
Drag and drop a file here, or click to select. Processed locally — never uploaded.
Output
Settings
Calculate

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Frequently Asked Questions

How do I verify a SHA3-256 file checksum?
Drop your file into the input zone. The SHA3-256 hash is computed and displayed as a 64-character hex string. Compare this against the expected checksum from the file's source.
Is SHA3-256 file hash the same as SHA-256 file hash?
No. SHA3-256 and SHA-256 are completely different algorithms and will produce different results for the same file. SHA3-256 uses the Keccak sponge construction; SHA-256 uses Merkle-Damgård.
Is my file sent to any server?
No. Everything is processed locally in your browser. Nothing is transmitted anywhere.

About SHA3-256 File Hash Calculator

The YoSin Tools SHA3-256 file hash calculator computes the SHA3-256 checksum of any file entirely within your browser. SHA3-256 is the 256-bit NIST FIPS 202 SHA-3 variant built on the Keccak sponge construction. All file processing is local — no data leaves your device.

SHA3-256 vs SHA-256 for Files

Both produce 64 hex character outputs. SHA3-256 uses the Keccak sponge (FIPS 202, 2015) while SHA-256 uses the Merkle-Damgård construction (FIPS 180-4, 2001). They will produce different checksums for the same file. Use whichever matches the checksum published by the software source.

Privacy

All computation happens in your browser. No file data is transmitted to any server. This tool is safe for sensitive files.