Atom Economy Calculator
Calculate atom economy with explicit inputs and a worked example.
Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Use masses from a balanced reaction, including stoichiometric coefficients. Does not measure experimental yield.
Example Calculation
- Stoichiometric desired-product mass: 80 g
- Stoichiometric reactant mass: 100 g
80 g desired product per 100 g total stoichiometric reactants gives 80% atom economy.
Frequently asked questions
How do I use this calculator?
Enter stoichiometric desired-product mass, stoichiometric reactant mass. The result updates automatically. Use Reset to restore the example values.
What method does it use?
atom economy = desired-product mass / reactant mass × 100. Use masses from a balanced reaction, including stoichiometric coefficients. Does not measure experimental yield.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.