SHA-256 Hash Generator
Calculate a SHA-256 digest from text with the browser Web Crypto API.
Try a small example
Try a small example
Load the fictional example in a cleared form. Check the options, run the tool if needed, and compare the result below.
Calculate a SHA-256 digest from text encoded as UTF-8. Compare digests only when the exact text bytes and algorithm match; the result is not encryption or a password-storage method. Enter text to calculate its SHA-256 digest with the browser Web Crypto API. A digest is a one-way checksum, not encryption; plain SHA-256 is not suitable for password storage. A matching digest is useful for comparison, but does not prove who created the input. A fast general-purpose hash is not suitable by itself for storing passwords.
Text to hash (UTF-8)
abc
Expected output
ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad
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Text is processed in your browser.
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Quick answer
Calculate a SHA-256 digest from text encoded as UTF-8. Compare digests only when the exact text bytes and algorithm match; the result is not encryption or a password-storage method.
The page and its assets load from the site; this operation uses your entered values only in this browser and does not send them to a calculation endpoint.
How to use it
Enter text to calculate its SHA-256 digest with the browser Web Crypto API. A digest is a one-way checksum, not encryption; plain SHA-256 is not suitable for password storage.
Limits
A matching digest is useful for comparison, but does not prove who created the input. A fast general-purpose hash is not suitable by itself for storing passwords.
Frequently asked questions
Why does my digest differ from another tool?
Both tools must hash the same bytes with SHA-256. This page encodes the text as UTF-8 and includes every space and line break; it does not normalize the text first.
Can I decrypt a SHA-256 hash?
No. A cryptographic hash produces a fixed-length digest and is not an encryption format with a decryption key.
Does a matching digest prove who created the text?
No. It can help compare content, but authenticity needs a trusted signature or keyed authentication mechanism.
Can SHA-256 store passwords securely by itself?
No. Password storage should use a purpose-built password hashing scheme with salt and suitable work factors.
Further guidance
Sources and references
These references document the cited standard or browser API; they do not validate the tool’s output.