CRC Checksum Generator

How to Use

• Enter the data you want to calculate CRC for in the input area above.
• Select the encoding format for your input data (UTF-8, ASCII, or Hex). If Hex is selected, please enter a hexadecimal string.
• Select a CRC model from the dropdown list. Parameters for the selected model will be displayed below.
• After typing and selecting a model, the CRC checksum will be automatically displayed in the result box on the right.
• Click the "Example" button in the top-right of the input area to quickly fill in sample text ("123456789").
• The result box has a "Copy" button in its top-right corner for your convenience.
• Click the "Clear" button to clear the input field and the result.

What is CRC (Cyclic Redundancy Check)?

CRC is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. It generates a fixed-size checksum based on polynomial division of a block of data.

Different CRC models (e.g., CRC-32, CRC-16, CRC-8) use different polynomials, initial values, and other parameters, making them suitable for various applications. This tool provides a selection of common models.