Enter the forage mass, utilization rate, and daily intake per cow into the calculator to determine the number of cattle per acre that can be supported by the pasture.

Cattle Per Acre Formula

The following formula is used to calculate the number of cattle per acre.

CPA = (FM * UR) / DI

Variables:

  • CPA is the number of cattle per acre
  • FM is the forage mass (lbs per acre)
  • UR is the utilization rate (%)
  • DI is the daily intake per cow (lbs)

To calculate the number of cattle per acre, multiply the forage mass per acre by the utilization rate, then divide by the daily intake per cow.

What is Cattle Per Acre?

Cattle per acre is a measure of how many cows can be sustainably supported on one acre of pasture land. This calculation is important for farmers and ranchers to ensure that their land can provide enough forage for their livestock without overgrazing. The number of cattle per acre depends on the forage mass available, the utilization rate of the forage by the cattle, and the daily intake required by each cow.

How to Calculate Cattle Per Acre?

The following steps outline how to calculate the number of Cattle Per Acre.


  1. First, determine the forage mass available on the pasture (FM) in pounds per acre.
  2. Next, determine the utilization rate (UR) at which the cattle will consume the forage, expressed as a percentage.
  3. Next, determine the daily intake per cow (DI) in pounds.
  4. Next, gather the formula from above = CPA = (FM * UR) / DI.
  5. Finally, calculate the number of Cattle Per Acre (CPA).
  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.

Forage mass available on the pasture (FM) = 2000 lbs per acre

Utilization rate (UR) = 50%

Daily intake per cow (DI) = 26 lbs