CRC Calculator Online | Cyclic Redundancy Check Tool
Online CRC calculator supporting all standard algorithms: CRC-8, CRC-16, CRC-32, CRC-CCITT, MODBUS and more. Professional-grade error detection with custom polynomials.
Input Format:
CRC Results
Click the star icon to pin your favorite algorithms at the top of the list.
CRC8/AUTOSAR
Used in automotive communication systems
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/BLUETOOTH
Used in Bluetooth protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/CDMA2000
Used in CDMA2000 mobile communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/DARC
Used in data broadcasting systems
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/DVB-S2
Used in digital satellite TV transmission
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/GSM-A
Used in GSM-A mobile communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/GSM-B
Used in GSM-B mobile communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/HITAG
Used in HITAG RFID systems for data integrity
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/I-432-1
Used in ITU-T I.432.1 standard
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/I-CODE
Used in Philips I-CODE RFID systems
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/ITU
ITU standard for ATM HEC calculation
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/LTE
Used in 4G LTE mobile communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/MAXIM-DOW
Used in Maxim/Dallas 1-Wire devices
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/MIFARE-MAD
Used in MIFARE Application Directory
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/NRSC-5
Used in digital broadcasting systems
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/OPENSAFETY
Used in industrial safety communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/ROHC
Used in Robust Header Compression protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/SAE-J1850
Used in automotive network communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/SMBUS
Used in SMBus communication protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/TECH-3250
Used in digital audio interfaces
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC8/WCDMA
Used in 3G WCDMA mobile communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/ARC
Used in ARC and LHA compression formats
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/CCITT-FALSE
Used in SDLC, X.25 protocols
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/CDMA2000
Used in CDMA2000 mobile systems
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/CMS
Used in Cryptographic Message Syntax protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/DDS-110
Used in data acquisition systems
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/DECT-R
Used in DECT wireless communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/DECT-X
Used in DECT radio communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/DNP
Used in power system automation
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/EN-13757
Used in smart meter communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/GENIBUS
Used in industrial fieldbus
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/GSM
Used in GSM mobile communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/IBM-3740
Used in IBM 3740 systems and AUTOSAR standard
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/IBM-SDLC
Used in IBM Synchronous Data Link Control protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/KERMIT
Used in Kermit file transfer protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/LJ1200
Used in LoJack vehicle tracking system
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/M17
Used in M17 digital voice protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/MAXIM-DOW
Used in Maxim/Dallas device communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/MCRF4XX
Used in Microchip RFID products
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/MODBUS
Used in Modbus industrial protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/OPENSAFETY-A
Used in industrial safety communications channel A
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/OPENSAFETY-B
Used in industrial safety communications channel B
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/PROFIBUS
Used in PROFIBUS industrial fieldbus
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/SPI-FUJITSU
Used in Fujitsu SPI communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/T10-DIF
Used in SCSI T10 Data Integrity Field
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/TELEDISK
Used in TeleDisk disk image format
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/UMTS
Used in UMTS mobile communications
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/USB
Used in USB data transfer verification
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/X25
Used in X.25 network protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC16/XMODEM
Used in XMODEM file transfer protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/AIXM
CRC used in Aeronautical Information Exchange Model
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/AUTOSAR
CRC used in Automotive Open System Architecture
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/BASE91-D
CRC used in Base91 encoding
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/BZIP2
CRC used in BZIP2 compression format
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/CD-ROM-EDC
CRC used in CD-ROM Error Detection Code
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/CKSUM
CRC used in UNIX CKSUM command
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/ISCSI
CRC used in iSCSI storage protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/ISO-HDLC
CRC used in ISO-HDLC communication protocol
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/JAMCRC
CRC used in JAM software
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/MEF
CRC used in Metro Ethernet Forum protocols
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/MPEG-2
CRC used in MPEG-2 transport stream
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC32/XFER
CRC used in XFER file transfer
MSB Left (Big Endian):
MSB Right (Little Endian):
CRC Knowledge
Cyclic Redundancy Check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. It is specifically designed to detect burst errors and is particularly effective in detecting common data transmission errors.
| Name | Width | Polynomial | Init | XorOut | RefIn | RefOut | Usage |
|---|---|---|---|---|---|---|---|
CRC8/AUTOSAR x⁸ + x⁵ + x³ + x² + x + 1 | 8 | 0x2F | 0xFF | 0xFF | false | false | Used in automotive communication systems |
CRC8/BLUETOOTH x⁸ + x⁷ + x⁵ + x² + x + 1 | 8 | 0xA7 | 0x00 | 0x00 | true | true | Used in Bluetooth protocol |
CRC8/CDMA2000 x⁸ + x⁷ + x⁴ + x³ + x + 1 | 8 | 0x9B | 0xFF | 0x00 | false | false | Used in CDMA2000 mobile communications |
CRC8/DARC x⁸ + x⁵ + x⁴ + x³ + 1 | 8 | 0x39 | 0x00 | 0x00 | true | true | Used in data broadcasting systems |
CRC8/DVB-S2 x⁸ + x⁷ + x⁶ + x⁴ + x² + 1 | 8 | 0xD5 | 0x00 | 0x00 | false | false | Used in digital satellite TV transmission |
CRC8/GSM-A x⁸ + x⁴ + x³ + x² + 1 | 8 | 0x1D | 0x00 | 0x00 | false | false | Used in GSM-A mobile communications |
CRC8/GSM-B x⁸ + x⁶ + x³ + 1 | 8 | 0x49 | 0x00 | 0xFF | false | false | Used in GSM-B mobile communications |
CRC8/HITAG x⁸ + x⁴ + x³ + x² + 1 | 8 | 0x1D | 0xFF | 0x00 | false | false | Used in HITAG RFID systems for data integrity |
CRC8/I-432-1 x⁸ + x² + x + 1 | 8 | 0x07 | 0x00 | 0x55 | false | false | Used in ITU-T I.432.1 standard |
CRC8/I-CODE x⁸ + x⁴ + x³ + x² + 1 | 8 | 0x1D | 0xFD | 0x00 | false | false | Used in Philips I-CODE RFID systems |
CRC8/ITU x⁸ + x² + x + 1 | 8 | 0x07 | 0x00 | 0x55 | false | false | ITU standard for ATM HEC calculation |
CRC8/LTE x⁸ + x⁷ + x⁴ + x³ + x + 1 | 8 | 0x9B | 0x00 | 0x00 | false | false | Used in 4G LTE mobile communications |
CRC8/MAXIM-DOW x⁸ + x⁵ + x⁴ + 1 | 8 | 0x31 | 0x00 | 0x00 | true | true | Used in Maxim/Dallas 1-Wire devices |
CRC8/MIFARE-MAD x⁸ + x⁴ + x³ + x² + 1 | 8 | 0x1D | 0xC7 | 0x00 | false | false | Used in MIFARE Application Directory |
CRC8/NRSC-5 x⁸ + x⁵ + x⁴ + 1 | 8 | 0x31 | 0xFF | 0x00 | false | false | Used in digital broadcasting systems |
CRC8/OPENSAFETY x⁸ + x⁵ + x³ + x² + x + 1 | 8 | 0x2F | 0x00 | 0x00 | false | false | Used in industrial safety communications |
CRC8/ROHC x⁸ + x² + x + 1 | 8 | 0x07 | 0xFF | 0x00 | true | true | Used in Robust Header Compression protocol |
CRC8/SAE-J1850 x⁸ + x⁴ + x³ + x² + 1 | 8 | 0x1D | 0xFF | 0xFF | false | false | Used in automotive network communications |
CRC8/SMBUS x⁸ + x² + x + 1 | 8 | 0x07 | 0x00 | 0x00 | false | false | Used in SMBus communication protocol |
CRC8/TECH-3250 x⁸ + x⁴ + x³ + x² + 1 | 8 | 0x1D | 0xFF | 0x00 | true | true | Used in digital audio interfaces |
CRC8/WCDMA x⁸ + x⁷ + x⁴ + x³ + x + 1 | 8 | 0x9B | 0x00 | 0x00 | true | true | Used in 3G WCDMA mobile communications |
CRC16/ARC x¹⁶ + x¹⁵ + x² + 1 | 16 | 0x8005 | 0x0000 | 0x0000 | true | true | Used in ARC and LHA compression formats |
CRC16/CCITT-FALSE x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0xFFFF | 0x0000 | false | false | Used in SDLC, X.25 protocols |
CRC16/CDMA2000 x¹⁶ + x¹⁵ + x¹⁴ + x¹¹ + x⁶ + x⁵ + x² + 1 | 16 | 0xC867 | 0xFFFF | 0x0000 | false | false | Used in CDMA2000 mobile systems |
CRC16/CMS x¹⁶ + x¹⁴ + x² + 1 | 16 | 0x8005 | 0xFFFF | 0x0000 | false | false | Used in Cryptographic Message Syntax protocol |
CRC16/DDS-110 x¹⁶ + x¹⁵ + x² + 1 | 16 | 0x8005 | 0x800D | 0x0000 | false | false | Used in data acquisition systems |
CRC16/DECT-R x¹⁶ + x¹⁰ + x⁸ + x⁷ + x³ + 1 | 16 | 0x0589 | 0x0000 | 0x0001 | false | false | Used in DECT wireless communications |
CRC16/DECT-X x¹⁶ + x¹⁰ + x⁸ + x⁷ + x³ + 1 | 16 | 0x0589 | 0x0000 | 0x0000 | false | false | Used in DECT radio communications |
CRC16/DNP x¹⁶ + x¹³ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁶ + x⁵ + x² + 1 | 16 | 0x3D65 | 0x0000 | 0xFFFF | true | true | Used in power system automation |
CRC16/EN-13757 x¹⁶ + x¹³ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁶ + x⁵ + x² + 1 | 16 | 0x3D65 | 0x0000 | 0xFFFF | false | false | Used in smart meter communications |
CRC16/GENIBUS x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0xFFFF | 0xFFFF | false | false | Used in industrial fieldbus |
CRC16/GSM x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0x0000 | 0xFFFF | false | false | Used in GSM mobile communications |
CRC16/IBM-3740 x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0xFFFF | 0x0000 | false | false | Used in IBM 3740 systems and AUTOSAR standard |
CRC16/IBM-SDLC x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0xFFFF | 0xFFFF | true | true | Used in IBM Synchronous Data Link Control protocol |
CRC16/KERMIT x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0x0000 | 0x0000 | true | true | Used in Kermit file transfer protocol |
CRC16/LJ1200 x¹⁶ + x¹⁴ + x¹³ + x¹¹ + x¹⁰ + x⁹ + x⁸ + x⁶ + x⁵ + x² + 1 | 16 | 0x6F63 | 0x0000 | 0x0000 | false | false | Used in LoJack vehicle tracking system |
CRC16/M17 x¹⁶ + x¹⁴ + x¹² + x¹¹ + x⁸ + x⁵ + x² + 1 | 16 | 0x5935 | 0xFFFF | 0x0000 | false | false | Used in M17 digital voice protocol |
CRC16/MAXIM-DOW x¹⁶ + x¹⁵ + x² + 1 | 16 | 0x8005 | 0x0000 | 0xFFFF | true | true | Used in Maxim/Dallas device communications |
CRC16/MCRF4XX x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0xFFFF | 0x0000 | true | true | Used in Microchip RFID products |
CRC16/MODBUS x¹⁶ + x¹⁵ + x² + 1 | 16 | 0x8005 | 0xFFFF | 0x0000 | true | true | Used in Modbus industrial protocol |
CRC16/OPENSAFETY-A x¹⁶ + x¹⁴ + x¹² + x¹¹ + x⁸ + x⁵ + x² + 1 | 16 | 0x5935 | 0x0000 | 0x0000 | false | false | Used in industrial safety communications channel A |
CRC16/OPENSAFETY-B x¹⁶ + x¹⁴ + x¹³ + x¹² + x¹¹ + x⁸ + x⁶ + x⁵ + x⁴ + x² + 1 | 16 | 0x755B | 0x0000 | 0x0000 | false | false | Used in industrial safety communications channel B |
CRC16/PROFIBUS x¹⁶ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁷ + x³ + x² + x + 1 | 16 | 0x1DCF | 0xFFFF | 0xFFFF | false | false | Used in PROFIBUS industrial fieldbus |
CRC16/SPI-FUJITSU x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0x1D0F | 0x0000 | false | false | Used in Fujitsu SPI communications |
CRC16/T10-DIF x¹⁶ + x¹⁵ + x¹¹ + x⁹ + x⁸ + x⁷ + x⁵ + x⁴ + x² + x + 1 | 16 | 0x8BB7 | 0x0000 | 0x0000 | false | false | Used in SCSI T10 Data Integrity Field |
CRC16/TELEDISK x¹⁶ + x¹⁵ + x¹³ + x⁷ + x⁴ + x² + x + 1 | 16 | 0xA097 | 0x0000 | 0x0000 | false | false | Used in TeleDisk disk image format |
CRC16/UMTS x¹⁶ + x¹⁵ + x² + 1 | 16 | 0x8005 | 0x0000 | 0x0000 | false | false | Used in UMTS mobile communications |
CRC16/USB x¹⁶ + x¹⁵ + x² + 1 | 16 | 0x8005 | 0xFFFF | 0xFFFF | true | true | Used in USB data transfer verification |
CRC16/X25 x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0xFFFF | 0xFFFF | true | true | Used in X.25 network protocol |
CRC16/XMODEM x¹⁶ + x¹² + x⁵ + 1 | 16 | 0x1021 | 0x0000 | 0x0000 | false | false | Used in XMODEM file transfer protocol |
CRC32/AIXM x³² + x³¹ + x³⁰ + x²⁷ + x²⁶ + x²⁵ + x²³ + x²¹ + x²⁰ + x¹⁹ + x¹⁷ + x¹⁶ + x¹⁵ + x¹³ + x¹¹ + x¹⁰ + x⁹ + x⁷ + x⁵ + x³ + x² + x + 1 | 32 | 0x814141AB | 0x00000000 | 0x00000000 | false | false | CRC used in Aeronautical Information Exchange Model |
CRC32/AUTOSAR x³² + x³¹ + x³⁰ + x²⁹ + x²⁷ + x²⁶ + x²³ + x²¹ + x²⁰ + x¹⁹ + x¹⁶ + x¹⁵ + x¹¹ + x⁹ + x⁸ + x⁵ + x⁴ + x² + x + 1 | 32 | 0xF4ACFB13 | 0xFFFFFFFF | 0xFFFFFFFF | true | true | CRC used in Automotive Open System Architecture |
CRC32/BASE91-D x³² + x³¹ + x²⁷ + x²⁶ + x²⁵ + x²⁴ + x²³ + x²¹ + x¹⁹ + x¹⁸ + x¹⁵ + x¹¹ + x¹⁰ + x⁹ + x⁸ + x³ + x² + 1 | 32 | 0xA833982B | 0xFFFFFFFF | 0xFFFFFFFF | true | true | CRC used in Base91 encoding |
CRC32/BZIP2 x³² + x²⁶ + x²³ + x²² + x¹⁶ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁷ + x⁵ + x⁴ + x² + x + 1 | 32 | 0x04C11DB7 | 0xFFFFFFFF | 0xFFFFFFFF | false | false | CRC used in BZIP2 compression format |
CRC32/CD-ROM-EDC x³² + x³¹ + x¹⁶ + x¹² + x⁵ + x⁴ + x³ + x + 1 | 32 | 0x8001801B | 0x00000000 | 0x00000000 | true | true | CRC used in CD-ROM Error Detection Code |
CRC32/CKSUM x³² + x²⁶ + x²³ + x²² + x¹⁶ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁷ + x⁵ + x⁴ + x² + x + 1 | 32 | 0x04C11DB7 | 0x00000000 | 0xFFFFFFFF | false | false | CRC used in UNIX CKSUM command |
CRC32/ISCSI x³² + x²⁸ + x²⁷ + x²⁶ + x²⁵ + x²³ + x²² + x²⁰ + x¹⁹ + x¹⁸ + x¹⁶ + x¹⁵ + x¹³ + x¹² + x¹¹ + x¹⁰ + x⁹ + x⁸ + x⁶ + x⁵ + x⁴ + x² + x + 1 | 32 | 0x1EDC6F41 | 0xFFFFFFFF | 0xFFFFFFFF | true | true | CRC used in iSCSI storage protocol |
CRC32/ISO-HDLC x³² + x²⁶ + x²³ + x²² + x¹⁶ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁷ + x⁵ + x⁴ + x² + x + 1 | 32 | 0x04C11DB7 | 0xFFFFFFFF | 0xFFFFFFFF | true | true | CRC used in ISO-HDLC communication protocol |
CRC32/JAMCRC x³² + x²⁶ + x²³ + x²² + x¹⁶ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁷ + x⁵ + x⁴ + x² + x + 1 | 32 | 0x04C11DB7 | 0xFFFFFFFF | 0x00000000 | true | true | CRC used in JAM software |
CRC32/MEF x³² + x³⁰ + x²⁹ + x²⁸ + x²⁶ + x²³ + x²¹ + x¹⁹ + x¹⁸ + x¹⁶ + x¹⁴ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁶ + x⁴ + x³ + x² + x + 1 | 32 | 0x741B8CD7 | 0xFFFFFFFF | 0x00000000 | true | true | CRC used in Metro Ethernet Forum protocols |
CRC32/MPEG-2 x³² + x²⁶ + x²³ + x²² + x¹⁶ + x¹² + x¹¹ + x¹⁰ + x⁸ + x⁷ + x⁵ + x⁴ + x² + x + 1 | 32 | 0x04C11DB7 | 0xFFFFFFFF | 0x00000000 | false | false | CRC used in MPEG-2 transport stream |
CRC32/XFER x³² + x⁷ + x⁶ + x⁴ + x² + x + 1 | 32 | 0x000000AF | 0x00000000 | 0x00000000 | false | false | CRC used in XFER file transfer |
Features
- Excellent error detection for burst errors
- Easy hardware implementation
- Fast software calculation using lookup tables
- Standardized parameters for different applications
- Mathematically well-understood properties
Applications
- Network protocols and data transmission
- Storage devices and file systems
- Digital communications
- Industrial control systems
- Error detection in embedded systems