Enter the total weight gain, initial weight, and total feed consumed during the period into the calculator to determine the Feedlot Ratio. This calculator can also evaluate any of the variables given the others are known.

Feedlot Ratio Formula

The following formula is used to calculate the Feedlot Ratio.

FR = (TW - IW) / FD


  • FR is the Feedlot Ratio TW is the total weight gain IW is the initial weight FD is the total feed consumed during the period

To calculate the Feedlot Ratio, subtract the initial weight from the total weight gain. Then, divide the result by the total feed consumed during the period. This will give you the Feedlot Ratio, which measures the efficiency of weight gain in relation to the amount of feed consumed.

What is a Feedlot Ratio?

A Feedlot Ratio is a measure used in livestock farming, specifically in feedlots, to determine the efficiency of converting feed into animal weight gain. It is calculated by dividing the amount of feed given to the animals by the amount of weight the animals gain. A lower ratio indicates a more efficient conversion of feed into weight, meaning the animals are gaining more weight per unit of feed, which is more cost-effective for the farmer.

How to Calculate Feedlot Ratio?

The following steps outline how to calculate the Feedlot Ratio.

  1. First, determine the total weight gain (TW).
  2. Next, determine the initial weight (IW).
  3. Next, determine the total feed consumed during the period (FD).
  4. Next, gather the formula from above = FR = (TW – IW) / FD.
  5. Finally, calculate the Feedlot Ratio.
  6. 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.

Total weight gain (TW) = 250

Initial weight (IW) = 150

Total feed consumed during the period (FD) = 50