Agriculture & Soil
Basic

Livestock Stocking Rate

Number of animals per unit of grazing land.

Formula

SR=NASR = \frac{N}{A}

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Variables

SRStocking rate (head/ha)
NNumber of animals
AArea (ha)

Example

120 sheep on 40 ha: SR = 3 head/ha

How it works

Stocking rate tells you how densely animals are being grazed on a piece of land. It is found by dividing the number of animals by the grazing area, because the same number of animals spread over a larger area creates a lower grazing pressure, while fewer hectares for the same animals creates a higher pressure. This makes the result useful for judging whether pasture is likely to be underused, balanced, or overgrazed.

When to use it

Use this formula when planning how many animals a paddock can carry or when comparing grazing pressure between farms or fields. It is also helpful when checking whether a current herd or flock size matches the available pasture area.

Worked example, step by step

A farmer has 75 goats grazing on 25 ha of land. SR = N / A SR = 75 / 25 SR = 3 Stocking rate = 3 head/ha

Common mistakes to avoid

  • Using acres and hectares without converting to the same area unit
  • Dividing area by number of animals instead of number of animals by area
  • Forgetting that the answer is an average density, not a measure of pasture quality

Did You Know?

Overstocking degrades pasture faster than it can recover — sustainable grazing hinges on this ratio.

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Reviewed & maintained by the FormulaWon editorial teamLast reviewed September 2026