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Percent Yield Calculator

Chemistry
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Calculates the percent yield of a chemical reaction, which represents the efficiency of the reaction. It compares the actual yield (amount of product obtained) to the theoretical yield (maximum possible amount of product).

More tools:Science & Lab Calculators
How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Actual Yield and Theoretical Yield in the units shown.

Step 2

Read Percent Yield in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Example 1

Actual Yield: 5 grams; Theoretical Yield: 6 grams

Percent Yield: 83.33 %

Example 2

Actual Yield: 15 grams; Theoretical Yield: 18 grams

Percent Yield: 83.33 %

High Yield

Actual Yield: 9.5 grams; Theoretical Yield: 10 grams

Percent Yield: 95 %

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