All tools
7 tools available, with more in progress. Everything runs locally in your browser.
Modbus
Modbus CRC16 Calculator
CRC-16/MODBUS for any hex payload, with the wire byte order spelled out.
Modbus RTU Frame Builder & Parser
Decode captured frames field by field, or build a request from scratch.
Modbus Register Decoder
Register pairs to float32/int32 across every byte order devices use in practice.
CRC & Checksums
Conversion
IEEE 754 Float Converter
Flip bits directly and see the exact value a float really holds, not the rounded print.
Hex / Binary / Decimal / ASCII Converter
Base conversion with byte grouping and endian swapping.
In progressC Struct Padding Visualizer
Byte-level layout, padding holes, and a reordering that shrinks the struct.
Timing & Bus Config
UART Baud Rate Error Calculator
Best divisor for a clock and baud rate, with the error margin that decides reliability.
In progressCAN Bit Timing Calculator
Segments, sample point, and register values for classic CAN and CAN FD.