Percent Yield Calculator Formula
Understand the math behind the percent yield calculator. Each variable explained with a worked example.
Formulas Used
Percent Yield
percent_yield = (actual_yield / theoretical_yield) * 100Variables
| Variable | Description | Default |
|---|---|---|
actual_yield | Actual Yield(g) | 18.5 |
theoretical_yield | Theoretical Yield(g) | 22 |
How It Works
How to Calculate Percent Yield
Formula
% Yield = (actual yield / theoretical yield) × 100
Worked Example
A reaction produces 18.5 g but the theoretical yield is 22 g.
actual_yield = 18.5theoretical_yield = 22
- 01% Yield = (18.5 / 22) × 100
- 02% Yield = 84.09%
Frequently Asked Questions
Can percent yield exceed 100%?
In theory no, but impure products or measurement errors can give apparent yields above 100%.
What is a good percent yield?
It depends on the reaction. Many organic syntheses consider 60-80% good, while industrial processes aim for 90%+.
Why is percent yield important?
It measures reaction efficiency, helps optimize conditions, and is essential for cost analysis in manufacturing.
Ready to run the numbers?
Open Percent Yield Calculator