How it works
Try comparing two messages
Make a fingerprint of hello, then try Hello. The capital letter changes the result. A fingerprint is useful for checking text against an expected value, but a matching result alone does not prove who wrote the text or whether it is trustworthy.
Which hash type should I choose?
Use the exact type named by the app or instructions you are following. SHA-256 and SHA-512 produce different results for the same text; a longer result is not a stronger password. If you want a password for an account, use the password generator instead.
Technical details and compatibility
UTF-8 text is hashed without trimming, a byte-order mark or Unicode normalization. Textarea line endings are LF. Empty input is valid. This page computes the named digest. MD5 and SHA-1 are legacy algorithms; raw SHA-2 digests also are not a password-storage scheme.
What happens to your input?
This tool does its work on this page. The site does not submit your entries or results or keep a history. However, any script allowed to run on the page could read its fields. Clearing the tool or leaving the page cannot erase clipboard entries, downloads, printouts, or screenshots. It also cannot protect you if your browser or device is compromised. Read the privacy limits.