Modbus float and byte-order decoder

Free browser tool · nothing is uploaded · updated 18 September 2026

A 32-bit value lives in two Modbus registers, and vendors put the two halves in one of four orders. Guess wrong and a perfectly good 12.75 reads as wild nonsense. Paste the two registers below and this decoder shows the float and the integers in all four orders at once, and highlights the ones that land on a sensible engineering magnitude — the same reasoning the Easy Modbus Analyzer does on the phone. Read the background in why does my Modbus value look wrong?