Chemistry
Actual Yield Calculator
Find the mass of product you should expect to collect from a known percent yield.
Your inputs
Change any value to update the result instantly.
Actual yield expected
19.5 g
Product lost to the process
5.5 g
Percentage lost
22 %
Reading
A typical laboratory yield
Theoretical and actual yield must be in the same units. A percent yield above 100 usually means the product is still wet or impure.
What this calculator does
Converts a theoretical yield and a percent yield into the mass of product actually expected.
What your result means
The mass you should expect to isolate once normal losses and side reactions are taken into account.
Formula and working
Y_actual = (% yield ÷ 100) × Y_theoretical
- 1
Collect the inputs
Theoretical yield = 25 g; Percent yield = 78 %
- 2
Apply the formula
Y_actual = (% yield ÷ 100) × Y_theoretical
- 3
Result
Actual yield expected = 19.5 g
Frequently asked questions
Symbols and assumptions
- Y_actual
- Mass of product collected
- Y_theoretical
- Maximum mass from the limiting reagent
- % yield
- Efficiency of the preparation
- • Theoretical and actual yield are quoted in the same units.
- • The percent yield comes from experience or a previous run.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • A percent yield above 100 usually means the product is wet or impure rather than an exceptional reaction.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Report a mistake or request an improvement
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