Calculate SHA-256, SHA-384 or SHA-512 for exact text or a local file, then compare a published checksum.
SHA is one-way. The input stays on this device; whitespace is included exactly.
The result appears here as you type.
Ctrl+↵ copy result · Ctrl+Shift+F result to input
No. A digest is a one-way fingerprint, not an encoded copy.
Yes. Every character, including spaces and line breaks, changes the text digest. File mode hashes the original bytes, including binary data.
The browser's Web Crypto digest reads the whole file into memory at once. The limit keeps memory use predictable.
This tool computes a plain digest. Password storage requires a purpose-built slow password hashing method.
Guides, common conversions and useful next steps.
Use the action beside a finished result to send it directly, or open another tool: