Modbus Rtu Crc Checksum
CRC-16/MODBUS Calculator is a free online Hash Tools tool that compute the CRC-16/MODBUS checksum used by RS-485 and industrial PLC protocols 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. This page focuses on the exact steps, so you can go from raw input to finished result without guessing.
How to use
Using CRC-16/MODBUS Calculator takes three steps:
- Paste your data into the input box (or load the example).
- Configure the options to match your target format or scenario.
- Copy, download or inspect the output — it updates live as you type.
- This page focuses on the exact steps, so you can go from raw input to finished result without guessing.
Examples
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Use cases
- Compute the CRC-16/MODBUS checksum used by RS-485 and industrial PLC protocols.
- Because everything is computed client-side, CRC-16/MODBUS Calculator is safe to use with sensitive data such as API keys, tokens or private logs.
FAQ
What is CRC-16/MODBUS Calculator?
CRC-16/MODBUS Calculator compute the CRC-16/MODBUS checksum used by RS-485 and industrial PLC protocols. It runs entirely in your browser, so your data stays private.
Is CRC-16/MODBUS Calculator free to use?
Yes. CRC-16/MODBUS 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.
Runs 100% in your browser — your data never leaves your device.