How to use the atom economy calculator
Measure how much reactant mass ends up in the desired product. Enter molar mass of desired product, total molar mass of reactants in the fields above; the atom economy is computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- Mp — Molar mass of desired product (g/mol)
- Mr — Total molar mass of reactants (g/mol)
Worked example
With molar mass of desired product = 44 g/mol, total molar mass of reactants = 100 g/mol, the calculator gives atom economy ≈ 44 %.
Frequently asked questions
What is the formula for the atom economy calculation?
Atom economy (%) = 100 × Mp / Mr. Here Mp is molar mass of desired product (g/mol), Mr is total molar mass of reactants (g/mol).
What inputs do I need for the atom economy calculator?
You need molar mass of desired product in g/mol, total molar mass of reactants in g/mol. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.