Data
Hash Generator
SHA checksums for text
Calculate a text checksum to compare content or detect changes.
A hash turns input into a fixed-length summary value. The same input gives the same result; even a small change usually changes the result greatly. It is used for comparison, not to restore the original.
Encryption: original → ciphertext → decrypt with a key → original.
Hashing: original → hash value. A hash function has no decrypt operation. Simple inputs can still be guessed by hashing candidates and comparing values.
Try an example
Result
| Key | Value |
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Usage guideWhen to use · How to use · Understand results
When to use this tool
Calculate a text checksum to compare content or detect changes.
How to use it
- A hash summarizes input into a fixed-length value. Identical input gives the same hash; a small change usually changes it greatly. Compare checksums to detect changes in text or configuration. This tool hashes text only, so use a file hashing tool for downloaded files.
Reading the result
A digest (checksum) is the result to compare; it is not a way to recover the original text. SHA-256 is a common default. Choose SHA-384 or SHA-512 when another system requires that exact algorithm or a longer digest. Password storage needs a salted password KDF, not ordinary SHA.