How much land and shelter do your alpacas need?
Enter your herd size for grazing land and shelter space, drawn from British Alpaca Society guidance, not a guess.
1.86 m² per alpaca × 3 (Cornell Extension minimum; no UK figure is published)
Grazing land
0.5–0.75 acres (0.20–0.30 ha)
British Alpaca Society: typically 4 to 6 alpacas per acre, depending on the grass.
Feed cost calculator · Water calculator · Bedding calculator · Cost of keeping calculator
Working backwards: how many alpacas fit?
How we calculated this +−
Shelter floor space
- Source:
- Cornell Cooperative Extension, "Backyard Poultry and Livestock Density Recommendations" (May 2020)
- Applies to:
- No UK figure exists: the British Alpaca Society says only that a shelter must be large enough for all the alpacas in the field. Cornell's US extension figure is used as the nearest published number.
- Assumption:
- Cornell gives a minimum of 20 sq ft per alpaca for a permanent barn. Converted to 1.86m² per alpaca.
- Calculation:
- 1.86m² (20 sq ft) per alpaca × alpaca count.
Grazing land
- Applies to:
- UK — the national breed society's husbandry guidance
- Assumption:
- BAS says the stocking rate depends on the amount and quality of grass, and is typically 4 to 6 alpacas per acre. Shown as a range.
- Calculation:
- Alpaca count ÷ 6 to alpaca count ÷ 4 acres.
Minimum group size
- Applies to:
- UK
- Assumption:
- BAS: alpacas are herd animals and should be kept in groups of 3 or more.
- Calculation:
- A warning shows below 3 alpacas. It doesn't change the area figures.
Sources checked: September 2026.
What this means
Land is the bigger budget. The British Alpaca Society's typical stocking rate is 4 to 6 alpacas per acre, depending on how much grass there is and how good it is, so the calculator shows that range rather than one number.
BAS doesn't publish a shelter floor area: it says a shelter must be large enough for all the alpacas in the field. The figure shown is Cornell Cooperative Extension's US minimum of 20 sq ft per alpaca, the nearest published number, and is labelled as such.
Alpacas should be kept in groups of 3 or more, so the calculator starts at 3 and warns below that.
Sources checked: October 2026.
Common questions
- How many alpacas can I keep per acre?
- The British Alpaca Society says the stocking rate depends on the amount and quality of grass and how often it's grazed, and is typically 4 to 6 alpacas per acre. How much land do alpacas need?.
- Can I keep just one alpaca?
- No. Alpacas are herd animals and the British Alpaca Society says they should be kept in groups of 3 or more. Can you keep just one alpaca?.
- How big should an alpaca shelter be?
- BAS says a shelter must be large enough for all the alpacas in the field, but gives no floor-space figure. The nearest published number is Cornell Cooperative Extension's minimum of 20 sq ft (about 1.9m²) per alpaca for a barn. How much space does an alpaca need?.
- What fencing do alpacas need?
- BAS says four-foot sheep fencing with stock netting is usually suitable. Barbed wire should be removed and electric fencing is best avoided.
- Do alpacas need to be inside in winter?
- No. BAS says alpacas are resilient and can live outside all year round as long as they have adequate shelter and nutrition.
- Is there a version of this for the US?
- Yes — the US alpaca calculator uses Cornell Cooperative Extension's figures. US alpaca space calculator.
Want to see what keeping alpacas is actually like?
Try My Backyard — a simple interactive simulation. Adopt one, feed it, play with it, keep its bedding clean, and see how it gets on.
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