Actual Yield Calculator

Your details

Choose which quantity you want the calculator to find.
Unit used for both actual and theoretical yield. Both must be the same unit.
The efficiency of the reaction, typically 0-100%. Values above 100% suggest impurities or undried product.
%
The maximum amount of product predicted by stoichiometry (limiting reagent fully consumed).
g
Enter the molar mass of your product to also see the result in moles (or grams if you are working in moles).
g/mol
Actual yieldGood yield
7.2

The amount of product actually obtained in the experiment

Theoretical yield9
Percent yield80%
Yield loss1.8
80 %
Low<50Moderate50-70Good70-90Excellent90-100Over 100% - check purity100+

Percent yield: 80.00% (7.2000 g recovered out of 9.0000 g theoretical).

  • A yield of 80.00% is good and considered acceptable in most teaching and industrial labs. Some loss during isolation and purification is normal.
  • 1.8000 g of product was not recovered - this is the gap between what stoichiometry predicts and what was isolated.
  • Theoretical yield (9.0000 g) is the upper ceiling set by the limiting reagent. It is never truly achievable because some product is always lost during purification, transfer, and drying.

Next stepRecord the yield, note conditions, and compare with literature values to benchmark your technique.

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