๐ญPercent Yield Calculator
Enter any two values โ actual yield, theoretical yield, percent yield โ and leave the third blank to solve for it.
Free Percent Yield Calculator
Percent yield compares how much product a reaction actually produced against how much the balanced equation predicts. Our free percent yield calculator uses the formula %Yield = (Actual Yield รท Theoretical Yield) ร 100, and it works in any direction โ enter the actual and theoretical yield to find percent yield, or enter the percent yield with one of the yields to solve for the other.
This is the calculation used at the end of nearly every stoichiometry lab: after you calculate the theoretical yield from your limiting reagent, compare it against what you actually recovered. A low percent yield often points to side reactions, incomplete reactions, or losses during purification and transfer.
Runs entirely in your browser โ free, no sign-up, no limits.