Online CRC16 Hash Generator
A 16-bit checksum common in Modbus and serial protocols. Paste your text and click the button to compute its CRC16 hash — everything runs on your device and is never sent to a server.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
hello world
Example Output
39c1
How to Use
- 1Type or paste the text you want to hash into the Input field.
- 2Click the Generate Hash button (or press Ctrl+Enter) to compute the CRC16 hash.
- 3The CRC16 hash appears in the Output field. Click Copy to copy it to your clipboard.
- 4Click Clear to empty the fields and start over.
About CRC16
CRC16 (Cyclic Redundancy Check) is an error-detecting code that produces a 16-bit checksum from data. CRC is widely used in networking, storage, and communication protocols to ensure data isn't corrupted in transit or at rest.
How it works: CRC treats the data as a large polynomial and divides it by a fixed generator polynomial; the remainder is the CRC value. A small change in the data yields a very different CRC, so errors are easy to detect.
CRC16 is widely used in Modbus, USB, and serial communication protocols to detect transmission errors.
FAQ
Is CRC safe for security?
No. CRC is a non-cryptographic checksum designed to DETECT transmission/storage errors, not for security. CRC is easy to forge intentionally, so do not use it for security-sensitive integrity — use SHA-256 or higher.
How long is a CRC16 hash?
A CRC16 hash is 16-bit long (4 karakter heksadesimal / 4 hexadecimal characters).
Is my data sent to a server?
No. The CRC16 hash is computed entirely in your browser. The text you enter never leaves your device.