About the Theoretical Yield Calculator
Maximum product mass a reaction can give from the limiting reactant, plus the yield at a chosen efficiency.
Also known as: maximum yield, expected yield, yield from limiting reactant.
How to use this calculator
- Enter chemical equation, limiting reactant, mass available, product of interest and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
theoretical yield = moles of limiting reactant × mole ratio × product molar mass
Worked example
Using the values pre-filled in the calculator above:
- Chemical equation: CaCO3 -> CaO + CO2
- Limiting reactant: CaCO3
- Mass available = 100 g
- Product of interest: CaO
- Expected efficiency = 100 %
the calculator returns:
- Theoretical yield: 56.0288 g
- Moles of product: 0.999141 mol
- Expected at 100%: 56.0288 g
- Balanced equation: CaCO3 → CaO + CO2