Livestock Pasture Acreage Calculator
Estimate pasture acreage needed for cattle, horses, goats, or sheep under continuous or rotational grazing.
Covers standard temperate-zone stocking rates.
Why Stocking Rates Vary So Much
The number of animals a pasture can support depends on grass species, rainfall, soil quality, and how the land is managed. A lush irrigated pasture in the Pacific Northwest can support a cow and calf on half an acre. A dry range in West Texas might need 20 acres for the same animal. The values here are reasonable starting points for improved temperate-zone pasture receiving 30 to 40 inches of annual rainfall.
Continuous vs Rotational Grazing
Continuous grazing keeps animals on the same pasture all season. It is simple but degrades pasture quality over time because animals selectively graze the best plants repeatedly, allowing weeds and bare soil to expand.
Rotational grazing splits the pasture into paddocks (typically 4 to 8), moving animals when grass is grazed down to 3 to 4 inches and resting each paddock until regrowth reaches 8 to 12 inches. The rest period lets grass build root reserves. Well-managed rotational systems can support 50 to 100% more animals on the same land compared to continuous grazing.
Stocking Rate Guidelines
These are for maintained temperate pastures and represent whole-season averages:
- Cattle (1,000 lb cow or steer): 1.5 to 2 acres continuous, 0.75 to 1 acre rotational
- Horses: 1.5 to 2 acres continuous, 1 acre rotational (horses are selective grazers and harder on pasture than cattle)
- Goats: 4 to 6 goats per acre continuous, 6 to 10 rotational
- Sheep: 2 to 3 per acre continuous, 4 to 5 rotational
Always have a drought contingency plan. In dry years, supplemental hay or temporary destocking is far cheaper than reseeding damaged pasture.