Cattle per Acre Calculator

Your details

Total grazeable area, exclude roads, ponds, and non-productive land.
acres
Annual dry-matter yield per unit area. Native range: 500-1,500 lb/acre; improved pasture: 2,000-4,000; irrigated: 5,000-8,000+.
lb dry matter/acre
Portion of forage actually consumed; the rest is trampled or left for regrowth. Continuous grazing: 25-50%. Rotational grazing: up to 60%.
%
Number of days per year the cattle will graze this pasture.
days
Heavier animals need more forage. A 1,200-lb cow needs roughly 26-30 lb of dry matter per day.
lb
Dry-matter forage consumed as a percentage of body weight. Extension default is 2.5% for most mature cattle; lactating cows may reach 3%.
% BW/day
Recommended head countHeavy stocking
27.8head

Maximum cattle the pasture can carry over the grazing period

Area per head3.6
Available AUMs192.3AUM
AUMs per acre1.92AUM/acre
Stocking statusHeavy stocking - monitor pasture condition closely
27.8 head
Small herd<10Mid-size herd10-50Large herd50-100Very large100+

Your pasture can carry about 27 head.

  • Your 100 acres of pasture can support approximately 27 cow-calf pairs for 180 days.
  • That works out to roughly 3.60 acres per head - typical for range conditions requiring more land per animal.
  • Total available forage is 192 AUMs (Animal Unit Months), the standard metric lenders and range managers use to compare grazing capacity.

Next stepCross-check with a local extension agent or USDA-NRCS range specialist who can measure actual forage yield on your specific soil type and climate.

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