Calculador de CRC

A CRC (Cyclic Redundancy Check) calculator computes checksum values used to detect errors in data transmission and storage. It applies polynomial division to your input data and produces a fixed-size result (checksum) that can verify data integrity.

1. Choose input type: ASCII text or hexadecimal bytes. 2. Enter your data in the text area. 3. Select output format: HEX, DEC, OCT, or BIN. 4. The tool instantly computes all supported CRC variants and displays results in three tables: CRC-8, CRC-16, and CRC-32. 5. Click the Copy button next to any result to copy it to your clipboard.

The tool supports over 60 CRC algorithms across three categories:

CRC-8: 20 algorithms including AUTOSAR, BLUETOOTH, CDMA2000, SMBUS, and more. CRC-16: 30 algorithms including ARC, KERMIT, MODBUS, XMODEM, USB, and more. CRC-32: 12 algorithms including ISO-HDLC (standard CRC-32), BZIP2, ISCSI (CRC-32C), MPEG-2, and more.

Each algorithm row shows the algorithm name, computed result, check value (for the standard test string "123456789"), polynomial, initial value, reflect input, reflect output, and XOR output.

The Check column shows the expected CRC result for the standard test string "123456789". If you enter "123456789" as ASCII input, your computed result should match the check value. This is useful for verifying that a specific CRC algorithm is producing correct results.

ASCII mode: Enter any text. The tool converts it to bytes using UTF-8 encoding. HEX mode: Enter hexadecimal byte pairs separated by spaces or continuous. For example: "48 65 6C 6C 6F" or "48656C6C6F". Hex input must have even length and contain only characters 0-9 and a-f (or A-F).