Use this chemistry calculator to reproduce a named relationship with explicit quantities and units for study, laboratory planning, or an independent numerical check.

Actual yield (g)

Mass of product actually obtained.

Theoretical yield (g)

Mass of product predicted by stoichiometry.

Compare an actual product mass against the theoretical yield as a percentage. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Percent yield (%)

Yield as a percentage of the theoretical yield.

• Stoichiometric results assume the balanced reaction, stated purity, and complete conversion to the selected products. Yield, selectivity, side reactions, moisture, and measurement uncertainty must be handled separately.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check units and significant figures, compare the result with limiting cases, and use measured or source-specific constants where available. Laboratory, safety, and regulatory decisions require validated methods and appropriate uncertainty analysis.

• Reaction Yield Mass Calculator

  Compute the actual product mass from product moles, molar mass, and a percent yield.

• Theoretical Yield Calculator

  Compute the maximum product mass from the limiting reagent amount and product molar mass.

• Percent Carbon From Combustion Calculator

  Express the carbon recovered from combustion CO₂ as a percentage of the original sample mass.