CRC-16 Checksum — Free Online Tool

Calculate CRC-16/ARC (IBM) cyclic redundancy check values. CRC-16 Checksum is a free online tool from the ToolsRift Hash & Crypto Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.

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How to use CRC-16 Checksum

  1. Open the CRC-16 Checksum above — it loads instantly, no account needed.
  2. Enter or upload your input. Everything is processed locally on your device.
  3. Get your result immediately and copy or download it with one click.

Frequently asked questions

Which CRC-16 variant is this?

CRC-16/ARC (also called CRC-16/IBM): polynomial 0x8005 reflected (0xA001), initial value 0x0000, no final XOR. The check value of '123456789' is 0xBB3D.

What is a CRC used for?

Detecting accidental changes to data during storage or transmission. It is an error-detection code, not a cryptographic hash.

Is CRC-16 secure?

No — CRCs are trivial to forge. Use them only for integrity checks against random corruption, never for security.

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