Atom Economy Calculator
Find how efficiently atoms become the desired product.
Atom economy measures green-chemistry efficiency — how much reactant mass ends up in the product.
How the Math Works
The Atom Economy Calculator uses a straightforward formula to measure reaction efficiency: atom economy equals the mass of the desired product divided by the total mass of all reactants, multiplied by 100. This percentage reveals what fraction of starting atoms actually end up in the final product, with the remainder becoming waste. To calculate it, simply input the molecular weights of your product and all reactants, then let the formula do the work. The result is a clear percentage showing how atom-economical your reaction is.
Practical Applications
To apply this calculation practically, first identify your target product and determine its molecular weight. Next, calculate the combined molecular weight of all reactants used in the reaction. Divide the product mass by the total reactant mass and multiply by 100 to get your atom economy percentage. This calculation is essential for green chemistry assessments, helping researchers design more sustainable syntheses by identifying reactions that minimize waste generation from the outset.
Day-to-Day Use
While you may not calculate atom economy daily, this concept indirectly impacts many everyday products. Understanding atom economy helps explain why some chemical processes create less packaging waste, use fewer resources, and generate fewer harmful byproducts. The principles behind efficient atom usage contribute to cleaner manufacturing of the medicines, plastics, and electronics we use regularly, ultimately leading to products that are safer for our environment and health.
Worked example
44 of 100 → 44%.
FAQ
Vs percent yield?
Atom economy is theoretical (from the equation); percent yield is experimental.