Percent Yield Calculator
Compare the actual yield of a reaction with the theoretical yield. The result updates as you type, with the working underneath so you can check it.
Your details
Result
Percent yield
82.00%
Good to know: % yield = actual ÷ theoretical × 100
Please note: For study and planning. Check calculations independently before using results with chemicals, electricity, pressure or machinery, and follow safety data sheets, manufacturer instructions and local regulations.
About this tool
Formula
% yield = actual ÷ theoretical × 100
Questions people ask
Why is my percent yield over 100%?
Usually the product is impure or still wet, or there was a measurement error. A true yield cannot exceed 100%.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
Spotted a mistake? Tell us and we'll check it. How we check our calculators