Free · no signup · browser-local
SHA-256 Checksum Calculator for Files and Text
Calculate a SHA-256 hash from text or a local file up to 20 MB. Paste an expected checksum to see whether it matches the generated digest.
Input and settings
LOCALEnter values to see a result.
Getting started
Enter text or choose a file, then compare the hexadecimal digest.
Before you use the result
Files are limited to 20 MB because Web Crypto digests in memory.
Try an example
Hash abc and compare a known checksum.
How it works
Web Crypto computes a 256-bit digest; this is not encryption.
Frequently asked questions
Generate a SHA-256 digest for text or a small local file.
How do I use SHA-256 Checksum?
Enter text or choose a file, then compare the hexadecimal digest.
Does this tool upload my data?
Inputs and files are processed in your browser. Page-view analytics do not contain your tool input.
What should I check before using the result?
Files are limited to 20 MB because Web Crypto digests in memory.