SHA hash calculator
SHA hash calculator lets you calculate SHA-256, SHA-384, or SHA-512 for text and files in your browser.
CRC32 checksum
CRC32 checksum lets you calculate CRC-32/ISO-HDLC checksums for text and files in your browser.
CRC32 checksum
⌂ Inputs and results stay in this browser and are not automatically stored or sent.
Waiting for input
Input and conditions
Text uses UTF-8, including line endings. Files use their raw bytes.
No automatic copying or saving. Take care on shared devices and with clipboard contents.
Output
Waiting for input
Complete text result
How to use
Calculate the checksum of text or a file and confirm that the reference uses CRC-32/ISO-HDLC.
Other CRC32 variants can give different values. This detects accidental corruption; it is not protection against deliberate tampering or a password-storage method.
Examples
123456789Principles and limits
Each input is limited to 1,048,576 bytes, output to 33,554,432 bytes, and processing to 5,000 ms. Input is never silently truncated.
Guides
Related tools
Text ⇔ bytes
Text ⇔ bytes lets you convert UTF-8 text to and from hexadecimal and binary bytes in your browser.