Percent yield calculator
Compute the percent yield of a reaction from the actual and theoretical yield.
Related tools
All Chemistry tools →Need Percent yield? The Percent yield calculator derives it from Actual yield, Theoretical yield in one step. For instance, with Actual yield = 8 and Theoretical yield = 10 it returns Percent yield = 80%.
How to use it
- Enter your values: Actual yield, Theoretical yield.
- Read the result instantly: Percent yield.
Frequently asked questions
How does the Percent yield calculator work?
It takes Actual yield and Theoretical yield and derives Percent yield from them. The calculation is live as you type, so the result updates on every change.
Which values does the calculator ask for?
2 values: Actual yield and Theoretical yield. Nothing else is required — no account, no file upload.
What does a typical calculation look like?
With Actual yield = 8 and Theoretical yield = 10, the calculator returns Percent yield = 80%. Those figures come from running this exact tool, so you can reproduce them by entering the same values.
When would I actually use this?
Preparing a solution at a stated concentration, working out how much of a reagent a reaction needs, and converting between mass, moles and volume.
What is the most common mistake?
Confusing molarity with molality. One is per litre of solution and the other per kilogram of solvent; they diverge as concentration rises, and only one of them is temperature-independent.
What is the difference between the Percent yield calculator and the Theoretical Yield Calculator?
This one returns Percent yield; the Theoretical Yield Calculator returns Result. That is the whole difference — open the one whose figure you need.
Where do the figures come from, and how current are they?
Atomic masses are the IUPAC standard values. Results assume ideal behaviour and standard conditions unless the tool says otherwise — real solutions deviate, and lab work needs lab measurement.