Science
Percent Yield Calculator
Use this percent yield calculator to compare actual product collected with the theoretical amount predicted by stoichiometry.
Choose the missing quantity; the calculator hides that field and solves it from the others.
Solved value
—
- Percent yield
- —
- Actual yield
- —
- Theoretical yield
- —
Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the percent yield calculator solves
Use this percent yield calculator to compare actual product collected with the theoretical amount predicted by stoichiometry.
Formula
How to use it
- Choose the quantity you want to solve for.
- Enter the known values with consistent units.
- Check the rearranged formula, substitution, and warnings before using the result.
How to read the answer
Percent yield below 100% usually means product was lost, side reactions occurred, or the reaction did not go to completion.
Common mistakes and edge cases
- Use the same mass units for actual and theoretical yield.
- Percent yield can exceed 100% if product is wet or impure.
- Do not use percent error when the lab asks for percent yield.
Worked examples
Solve the ratio
Solved value
Percent yield = 0.82 %
Reverse-solve the denominator
Solved value
Theoretical yield = 0.1093 g
Frequently asked questions
Can the percent yield calculator solve for a missing variable?+
Yes. Use the solve-for control to hide the missing value, then enter the other known values with compatible units.
Why do the units matter?+
Formula calculators assume the entered values are already in matching units. Convert first when your measurements use mixed systems.
Related calculators
Scientific Notation Calculator
Convert regular numbers to scientific notation and show coefficient, exponent, and engineering notation.
Percentage Calculator
Calculate percent of a number, part-to-whole percentages, percent change, missing wholes, and reverse percent changes.
Square Root Calculator
Calculate square roots, simplify exact radicals for whole numbers, and identify perfect squares.
Boyle's Law Calculator
Solve P1V1 = P2V2 for gas pressure or volume when temperature and moles stay constant.
Buoyant Force Calculator
Solve buoyant force F_b = rho V g for fluid density, displaced volume, gravity, or upward force.
Capacitance Charge Calculator
Solve Q = CV for capacitor charge, capacitance, or voltage with clear unit-aware circuit steps.
Last updated: May 15, 2026