Enter the error free products (units) and the total units into the Calculator. The calculator will evaluate the First Time Yield. 

First Time Yield Formula

FTY = EFP / TP * 100


  • FTY is the First Time Yield (%)
  • EFP is the error free products (units)
  • TP is the total units

To calculate First Time Yield, divide the number of error free products by the total units, then multiply by 100.

How to Calculate First Time Yield?

The following steps outline how to calculate the First Time Yield.

  1. First, determine the error free products (units). 
  2. Next, determine the total units. 
  3. Next, gather the formula from above = FTY = EFP / TP * 100.
  4. Finally, calculate the First Time Yield.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

error free products (units) = 45

total units = 23