CRC Hash Calculator | Free Online CRC Checksum Calculator

Securely generate CRC1, CRC8 (1-Wire, DVB-S2), CRC16 (Modbus, CCITT, XModem), CRC24, CRC32 (MPEG-2, JAM) and other hash values for your data.


Hash in uppercase.

How to Use the Hash Calculator

1

Enter Text or Upload A File

Select whether you want to enter text directly or upload a file to calculate its hash value.

2

Select Algorithm

Choose the hashing algorithm you want to use from the available options like CRC8, CRC32, etc.

3

Select Encoding

Select the encoding (UTF-8, UTF-16, etc.) for the input data.

4

Get Results

Automatically generates hash values in both uppercase and lowercase formats based on the input content and parameters, which can be copied and saved.

Frequently Asked Questions

CRC (Cyclic Redundancy Check) is an error-detecting code commonly used in digital networks and storage to detect accidental changes to raw data. It works by performing a mathematical calculation on the data being transmitted or stored, generating a fixed-size checksum. When the data is retrieved or received, the CRC calculation is repeated and compared to the original checksum. If they match, the data is assumed to be correct.
CRC is primarily designed for error detection, not security. It is fast and efficient at detecting accidental changes in data but is not suitable for cryptographic purposes. Cryptographic hash functions like MD5, SHA-1, and SHA-256 are designed to be collision-resistant and secure, making them suitable for applications like password storage, digital signatures, and ensuring data integrity against intentional tampering. CRCs are not designed to be collision-resistant and should not be used for security-critical applications.
es, CRC can be used to verify file integrity for detecting accidental changes, such as those that might occur during file transmission or storage. However, it is not recommended for verifying integrity against intentional tampering, as cryptographic hashes like SHA-256 are more secure for that purpose. Many file download sites provide both CRC checksums and cryptographic hashes for files, with the CRC checksum being used primarily for quick error detection during transfer.