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.
How to use: CRC-16 Calculator →
Description
Compute CRC-16 in six variants: CCITT-FALSE, XMODEM, KERMIT, MODBUS, X.25 and DNP.
- Because everything is computed client-side, CRC-16 Calculator is safe to use with sensitive data such as API keys, tokens or private logs.
How to use
Using CRC-16 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.
Examples
These ready-made examples show typical inputs and the exact output CRC-16 Calculator produces for them.
123456789
The standard CRC check string: CCITT-FALSE gives 0x29B1, XMODEM 0x31C3, KERMIT 0x2189, MODBUS 0x4B37.
Use cases
Common situations where CRC-16 Calculator helps:
- Compute CRC-16 in six variants: CCITT-FALSE, XMODEM, KERMIT, MODBUS, X.25 and DNP.
- Because everything is computed client-side, CRC-16 Calculator is safe to use with sensitive data such as API keys, tokens or private logs.
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.