Reaction Yield Calculator
% yield = actual / theoretical × 100
Percentage yield from actual and theoretical yield, on a mass or an amount-of-substance basis.
Inputs
Supply it to see the result in both mass and moles.
Calculation
Percent yield
Yield % = actual / theoretical × 100
Converted to a common unit
actual = 2.1 g, theoretical = 2.75 g
Substitution
Yield % = 2.1 / 2.75 × 100
76.36 %
Inputs
- Basis
- Mass
- Actual yield
- 2.1 g
- Theoretical yield
- 2.75 g
Actual and theoretical yield must describe the same substance and the same basis (both masses, or both amounts).
About this calculator
Percentage yield compares the amount of product actually isolated with the amount that the limiting reagent could have produced. Both values must describe the same substance and be on the same basis — either both masses or both amounts of substance.
The theoretical yield itself comes from the balanced equation and the limiting reagent; use the stoichiometry calculator to derive it. LabCalc never infers reaction coefficients.
LabCalc is provided as a calculation aid. Users remain responsible for verifying calculations, units, chemical compatibility, experimental procedures and applicable safety requirements before laboratory use.
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