Browser-local chemistry arithmetic

Percent Yield Calculator

Solve for percent yield, actual yield, or theoretical yield from the other two entered quantities.

Calculate

Enter values and calculate.

Formula and method

Percent yield = actual yield ÷ theoretical yield × 100. Reverse modes rearrange only this comparison.

Worked example

80 g actual divided by 100 g theoretical equals 80%.

Important boundary

This compares actual and theoretical yield. It does not calculate theoretical yield from stoichiometry or establish purity, safety, mechanism, or process quality.

Common mistake

Use compatible dimensions and distinguish the quantity being solved from the quantities entered. The calculator normalizes supported units before arithmetic and rejects zero, negative, malformed, or unbounded values.

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