Checksum Calculator

Generate checksums for input text or files using CRC32, SHA1, and SHA512 algorithms.

Input Type

Algorithms

ℹī¸ About Checksum Algorithms

CRC32: Fast 32-bit cyclic redundancy check, commonly used for error detection and file integrity checks.
SHA1: 160-bit secure hash algorithm, widely used but deprecated for security-critical applications.
SHA512: 512-bit secure hash algorithm, part of SHA-2 family, providing strong cryptographic security.

How to use Checksum Calculator

  1. 1
    Choose input type — Select text input or file upload.
  2. 2
    Enter data — Type text or upload a file.
  3. 3
    Select algorithms — Choose which checksum algorithms to calculate.
  4. 4
    Calculate and copy — Generate checksums and copy them for verification.

The Checksum Calculator runs entirely in your browser — your data never leaves your machine. All calculations are performed locally using Web Crypto API.