What is DEC2HEX function in Excel? DEC2HEX function is one of Engineering functions in Microsoft Excel that converts a decimal number to hexadecimal. Syntax of DEC2HEX function DEC2HEX(number, [places]) The DEC2HEX function syntax has the following arguments: Number:  The decimal integer you want to convert. If number is negative, places is ignored and DEC2HEX returns a […]