How to use: CRC-16 Calculator

CRC-16 Calculator is a free online Hash Tools tool that compute CRC-16 in six variants: CCITT-FALSE, XMODEM, KERMIT, MODBUS, X.25 and DNP instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.

Use CRC-16 Calculator now →

Description

Compute CRC-16 in six variants: CCITT-FALSE, XMODEM, KERMIT, MODBUS, X.25 and DNP.

  • Hash Tools
  • Because everything is computed client-side, CRC-16 Calculator is safe to use with sensitive data such as API keys, tokens or private logs.
Input CRC-16 Calculator Output Runs 100% in your browser — your data never leaves your device.
CRC-16 Calculator — Input → Output

How to use

Using CRC-16 Calculator takes three steps:

  1. Paste your data into the input box (or load the example).
  2. Configure the options to match your target format or scenario.
  3. Copy, download or inspect the output — it updates live as you type.
How to use · CRC-16 Calculator 1 Paste your data intothe input box (or loadthe example). 2 Configure the optionsto match your targetformat or scenario. 3 Copy, download orinspect the output —it updates live as youtype.
How to use

Run

Examples

The standard CRC check string: CCITT-FALSE gives 0x29B1, XMODEM 0x31C3, KERMIT 0x2189, MODBUS 0x4B37.

Input

123456789

Output

29B1

This output was produced by actually running the tool, not written by hand.

Use cases

Common situations where CRC-16 Calculator helps:

  • Compute CRC-16 in six variants: CCITT-FALSE, XMODEM, KERMIT, MODBUS, X.25 and DNP.

Parameters

This tool has no options — it works on the input alone.

FAQ

What is CRC-16 Calculator?

CRC-16 Calculator compute CRC-16 in six variants: CCITT-FALSE, XMODEM, KERMIT, MODBUS, X.25 and DNP. It runs entirely in your browser, so your data stays private.

Is CRC-16 Calculator free to use?

Yes. CRC-16 Calculator is free, unlimited and works without registration or installation.

Does my data get uploaded?

No. All processing happens locally in your browser; nothing is sent to any server.

Good to know

  • Everything runs client-side, so extremely large inputs are limited by your browser tab’s memory rather than by a server upload limit.

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CRC-16 Calculator → · Hash Tools →

Use CRC-16 Calculator now →