CRC32 Checksum Generator
Compute the CRC32 checksum of any text instantly, shown in hex and decimal.
Hex
D516774C
Decimal
3575019340
CRC32 is a fast checksum used to detect accidental changes in data, from ZIP files to network packets. This tool computes it from a standard 256-entry lookup table with the IEEE 802.3 polynomial, live in your browser as you type.
How to use
- Type or paste the text you want to checksum.
- The CRC32 value updates live in hex and decimal.
- Copy whichever format you need.
Frequently asked questions
- Is CRC32 secure like SHA-256?
- No, CRC32 is designed for error detection, not security; it's easy to construct collisions, so don't use it for passwords or integrity against tampering.
- Why do I see different CRC32 results elsewhere?
- Make sure the other tool uses the same IEEE 802.3 polynomial (0xEDB88320) and encodes text as UTF-8; some tools use different polynomials or byte encodings.
- Does this run on the server?
- No, the checksum is computed entirely in your browser using JavaScript; your text never leaves your device.