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CRC-8 Calculator

Calculate CRC-8

Calculate CRC-8 from text and copy the 2-character hexadecimal result. This variant uses the common CRC-8 profile with polynomial 0x07.

CRC-8 is small, so it catches fewer error patterns than wider CRCs. Use it only when the receiving format or device expects an 8-bit CRC.

Keep leading zeroes

The calculator pads CRC-8 output to 2 hex characters. A result such as 04 is different from 4 when a protocol expects fixed-width fields.

Frequently Asked Questions

CRC-8 returns an 8-bit checksum, usually written as 2 hexadecimal characters.

Paste text into the input pane. Batch mode calculates one CRC-8 value per line.

This variant uses polynomial 0x07, initial value 0x00, no reflection, and final XOR 0x00.

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