Measurement of various quantities has been an integral part of our lives since ancient times. In this modern era of automation, we need to measure quantities more so than ever. So, what is the importance of First Order Reaction converter? The purpose of First Order Reaction converter is to provide First Order Reaction in the unit that you require irrespective of the unit in which First Order Reaction was previously defined. Conversion of these quantities is equally important as measuring them. First Order Reaction conversion helps in converting different units of First Order Reaction. First order reaction can be defined as a chemical reaction in which the reaction rate is linearly dependent on the concentration of only one reactant.. There are various units which help us define First Order Reaction and we can convert the units according to our requirement. unitsconverters.com provides a simple tool that gives you conversion of First Order Reaction from one unit to another.