LRC checksum (8-bit)

Client

Longitudinal redundancy check—two's complement of sum mod 256.

LRC: 0xC0 (192)

Nearby workflows on Toolcore

  • CRC-8 checksumCRC-8 with polynomial 0x07 on UTF-8 bytes—local digest byte. when the payload needs a different encoding or escape format.
  • ASCII byte sumSum char codes of a string mod 256—simple checksum toy. when the payload needs a different encoding or escape format.
  • CRC-32 & CRC-32CIEEE CRC-32 and Castagnoli CRC32C on UTF-8 text or raw hex bytes—ZIP/PNG family vs iSCSI/protobuf; local only, complements file checksum for whole-file digests. when the payload needs a different encoding or escape format.
  • File checksum & hashSHA-256, SHA-512, MD5, CRC-32, and more for a local file—verify downloads without uploading. when the payload needs a different encoding or escape format.

About this tool

Modbus-style LRC byte—sum ASCII codes then two's complement to 8 bits.

Common use cases

  • LRC checksum (8-bit) for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

Related utilities you can open in another tab—mostly client-side.