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SHA1 SHA256
Not possible

Convert SHA1 to SHA256

Can you convert SHA1 to SHA256?
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Is it possible to convert SHA1 to SHA256?
No - not a direct conversion.

Cannot convert a SHA-1 hash to SHA-256 - hashes are one-way fingerprints of the original file, not reversible data. To get a SHA-256 you must re-hash the ORIGINAL FILE with the SHA-256 algorithm (certutil -hashfile file SHA256). The .sha1 file contains only a 40-char digest, not the original file bytes.

No direct path
Also to SHA256: SFV · MD5

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Converting SHA1 to SHA256

A .SHA1 file and a .SHA256 file hold different kinds of data, so there is no direct way to turn one into the other.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

About these formats

.SHA1 SHA-1 Checksum File

A .sha1 file is a small plain-text file containing a 40-character SHA-1 fingerprint of another file (an ISO, installer, or archive). You use it to confirm your download arrived without…

Open .SHA1 details →
.SHA256 SHA-256 Checksum File

A .sha256 file is a small plain-text file holding a 64-character SHA-256 fingerprint of another file. You use it to confirm a download arrived without corruption or tampering: compute the…

Open .SHA256 details →