Calculators » CRC-64 Calculator | CRC64 Formula, Polynomial & Examples

CRC-64 Calculator | CRC64 Formula, Polynomial & Examples

crc-64 crc64 calculator formula calculator

A CRC-64 calculator is an essential online tool for computing 64-bit Cyclic Redundancy Check (CRC-64) values used to verify data integrity in digital communication, file formats, and networking protocols.

CRC-64 is a powerful error detection algorithm that provides a much larger checksum size than CRC-32, making it suitable for applications that require higher levels of data integrity and error detection. CRC-64 is used in standards such as ISO 3309, ECMA-182, and various file formats and communication protocols.

This online CRC-64 calculator allows you to calculate CRC-64 checksums using hexadecimal input data, configurable generator polynomial vectors, and standard CRC parameters such as initial value (INIT), input/output reflection (RefIn/RefOut), and final XOR (XorOut).

CRC64 checksum Calculator

Example-1 : CRC-64/ECMA-182

INPUTS:

Data Vector (Hex) = 313233343536373839
Polynomial = 0x42F0E1EBA9EA3693
Init = 0x0000000000000000
RefIn = 0 (i.e. FALSE)
RefOut = 0 (i.e. FALSE)
XorOut = 0x0000000000000000

OUTPUT: CRC-64 Checksum Output = 0x6C40DF5F0B497347

CRC-64 Generator Polynomial

The standard CRC-64 generator polynomial is :

G(x) = x^64 + x^62 + x^57 + x^55 + x^50 + x^47 + x^46 + x^45 + x^40 + x^39 + x^38 + x^37 + x^35 + x^33 + x^32 + x^29 + x^28 + x^27 + x^26 + x^25 + x^24 + x^23 + x^22 + x^21 + x^19 + x^18 + x^17 + x^16 + x^15 + x^13 + x^11 + x^10 + x^9 + x^8 + x^7 + x^6 + x^5 + x^4 + x^3 + x^2 + x + 1

This polynomial is fixed for most CRC-64 variants; the differences come from initial value, reflection and final XOR.

Summary:

Use this CRC-64 calculator and formula guide to quickly verify data integrity, troubleshoot protocol issues and gain a deeper understanding of how CRC-64 protects data in modern digital systems.