LRC checksum (8-bit)
ClientLongitudinal redundancy check—two's complement of sum mod 256.
LRC: 0xC0 (192)
Nearby workflows on Toolcore
- CRC-8 checksum — CRC-8 with polynomial 0x07 on UTF-8 bytes—local digest byte. when the payload needs a different encoding or escape format.
- ASCII byte sum — Sum char codes of a string mod 256—simple checksum toy. when the payload needs a different encoding or escape format.
- CRC-32 & CRC-32C — IEEE 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 & hash — SHA-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.
More tools
Related utilities you can open in another tab—mostly client-side.
CRC-8 checksum
ClientCRC-8 with polynomial 0x07 on UTF-8 bytes—local digest byte.
ASCII byte sum
ClientSum char codes of a string mod 256—simple checksum toy.
CRC-32 & CRC-32C
ClientIEEE 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.
File checksum & hash
ClientSHA-256, SHA-512, MD5, CRC-32, and more for a local file—verify downloads without uploading.