Important Notes
File size can affect the speed of hash value calculation. Please be patient.
About the SHA3-256 File Checksum Tool
Use this SHA3-256 File Checksum Tool to calculate the SHA3-256 hash value of a file. SHA3-256 is a cryptographic hash function in the SHA-3 family. It creates a fixed 256-bit digest, commonly displayed as a 64-character hexadecimal checksum.
A SHA3-256 checksum is useful when you need to check file integrity, compare two files, or verify whether a downloaded file has changed. Upload or select a file, calculate its SHA3-256 file hash, and compare the result with a trusted checksum from the file provider.
SHA3-256 is different from SHA-256 and SHA2-256. SHA-256 belongs to the SHA-2 family, while SHA3-256 belongs to the SHA-3 family and is based on Keccak. The names are similar, but they are different algorithms and produce different hash values for the same file.
SHA3-256 is not file encryption. It does not encrypt a file, decrypt a file, or hide the original file content. If you searched for "SHA3-256 file encryption" or "SHA-3-256 encrypt file", this tool calculates a one-way file hash/checksum instead.
• Features
File SHA3-256 Hash: Calculate the SHA3-256 checksum for a selected file and view the resulting hash value.
256-bit Output: SHA3-256 generates a 256-bit digest, usually shown as a 64-character hexadecimal string.
Integrity Check: Compare the generated checksum with a known SHA3-256 checksum to see whether a file has changed.
SHA-3 Family Algorithm: SHA3-256 is part of the SHA-3 family, alongside SHA3-224, SHA3-384, and SHA3-512.
Clear File-Focused Workflow: This page is for file checksums, not text hash generation.
• Use Cases
Verify Downloads: Check whether a downloaded file matches the SHA3-256 checksum published by a software provider or file source.
Compare Files: Generate SHA3-256 hashes for two files and compare the results to confirm whether the file contents are identical.
Detect File Changes: Recalculate a file checksum later to check whether the file has been modified.
Software Release Checks: Use SHA3-256 checksums as one part of a release or distribution verification workflow.
Important Note: SHA3-256 is a fast cryptographic hash function and should not be used by itself for password storage. Password storage should use a dedicated password-hashing algorithm such as Argon2id, bcrypt, scrypt, or PBKDF2.