Checksums hash-wasm checksum

CRC64 Checksum Generator

Calculate 64-bit CRC checksums with ECMA-182 polynomial for large files and storage systems.

crc64.workspace
1 option
0 bytes UTF-8, Hex, Base64, or File input

Secure client-side computation. No data leaves your browser. Privacy Security

Result Output

What Is CRC64?

CRC64 computes a 64-bit cyclic redundancy check using the ECMA-182 polynomial, providing enhanced error detection with a larger checksum space.

Specifications

Output Size 64 bits
Standard ECMA-182
Standard Year 1993

Use Cases

  • Large file transmission integrity
  • Storage systems error detection
  • Network packet verification
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Security Notice

CRC64 is not cryptographically secure and should not be used for security or authentication purposes.

Related Tools

CRC32 Checksums SHA-256 Hashes

Utilities

File Hash Verifier Verify local files against published checksums. Hash Compare Compare expected and actual digest values. Multi Hash Generator Generate common hashes from one input.

Guides

Algorithm Comparison Guide Choose the right primitive for each task. Hash Test Vectors Compare known outputs across common algorithms.

Implementation Notes

Practical usage details for this browser-based CRC64 tool.

How to Generate a CRC64 checksum

  1. Choose UTF-8, Hex, Base64, or File input mode.
  2. Enter text, encoded bytes, or choose a local file to process.
  3. Adjust the CRC64 options if your use case requires non-default settings.
  4. Click Generate CRC64 Checksum and copy the result.

Example Input

Sample input:

abc

Use this sample input, then copy the generated checksum from the result panel.

When Not to Use CRC64

  • Do not use it for authentication or proving who created a message.
  • Do not use it where malicious tamper resistance is required.
  • Do not use it for password storage.

Recommended Alternatives

Review related tools when you need a different output size, security margin, or keyed construction.

Frequently Asked Questions