CRC-8
- Input
- CRC-8 text: 123456789
- Expected output
- F4
Polynomial 0x07, no reflection, also called CRC-8/SMBUS.
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crc calculator
The calculator opens on CRC-32 with the input 123456789, the test string every CRC catalogue uses. The result, cbf43926, is the published check value for that model; if yours matches it, you picked the right variant.
Polynomial 0x07, no reflection, also called CRC-8/SMBUS.
Polynomial 0x8005, initial value 0xFFFF, input and output reflected.
CRC-32/ISO-HDLC, the most widely used one.
Same width as CRC-32, polynomial 0x1EDC6F41, a different result.
The CRC-64 of the .xz format, reflected ECMA-182 polynomial.
Yes. Text, files and HMAC secrets are processed directly in the browser without any upload.
Compute the CRC of 123456789 under every model of the right width and compare it with what your code returns for the same input. The one that matches is your variant. If none does, try the custom mode with the datasheet parameters.
Yes. Switch the input format to hex bytes (it accepts "01 03 00", "0x01,0x03" and "010300") or use File mode. Nothing is uploaded: the calculation runs in your browser.
Above 32 bits the register no longer fits in a regular JavaScript number and the math uses BigInt integers, which are slower. Up to 32 bits it runs on a 256-entry table with native numbers.
-Checksum clássico para integridade acidental, não criptográfica.
Text, files and secrets are processed locally. Nothing is sent to the server.