Calculate total livestock units for cattle, sheep, pigs and horses. See land requirement at 2 SU/ha.
By Konstantin Iakovlev · Founder, Calks.uk
Last updated: · Verified against Defra and GOV.UK 2026 guidance
Rates verified: 28 September 2026
Disclaimer
This calculator is for guidance only. It is not financial or tax advice: check anything you rely on against the official source or a qualified adviser. Rates and figures come from Defra and GOV.UK and are reviewed for 2026. Everything is calculated in your browser; nothing you enter is sent to our servers.
How It Works
Livestock Units (LU) provide a standardised measure for comparing the grazing demand and environmental impact of different farm animals. Each species and age class is assigned a coefficient relative to a reference animal, with one dairy cow counting as 1.0 LU. The standard UK coefficients put a beef suckler cow at 0.75, other cattle over 2 years at 0.65 and cattle aged 1 to 2 years at 0.6. On the sheep side a ewe counts as 0.12, a ram 0.15 and a hogget 0.10. Pigs weigh lighter in the system, with a sow at 0.4 and a finishing pig at 0.12, while a horse sits at 0.80.
Total Livestock Units determine your farm's stocking density when divided by the available forage hectares, and that single ratio is what the schemes look at. Defra and the Rural Payments Agency use stocking density thresholds for agri-environment scheme eligibility, cross-compliance checks and Countryside Stewardship agreements, so a herd that looks modest on paper can still push a holding past a limit. Typical extensive grazing targets 0.5 to 1.0 LU per hectare, while intensive grassland systems may support 1.5 to 2.5 LU/ha.
Animals that are only on the ground for part of the year would otherwise distort the picture. Seasonal adjustments handle that by multiplying the LU coefficient by the fraction of months grazed. Two hundred ewes present for 8 months are counted as 200 x 0.12 x 8/12, giving 16.0 adjusted LU, which is the figure an assessor wants rather than the headline flock number. The same adjustment applies to any class of stock brought in for summer grazing and moved off again before winter.
The calculator aggregates all animal classes on your holding and produces a total LU figure, overall stocking rate per hectare, and comparison against scheme thresholds. It also runs the other way, showing the land requirement at 2 SU/ha, which is a useful sense-check before buying stock or taking on extra ground. Entering each class separately rather than lumping the cattle together matters here, since the coefficient for animals aged 1 to 2 years differs from the one applied to cattle over 2 years.
A mixed farm shows how the classes combine. Take 45 dairy cows at 1.0 LU, 30 beef cattle over 2 years at 0.65 LU and 250 breeding ewes at 0.12 LU. Those come to 45.0, 19.5 and 30.0 respectively, or 94.5 Livestock Units altogether. Spread across 65 hectares, the stocking density works out at 1.45 LU/ha, which sits inside the typical grassland range. Handling the three enterprises separately in your head would never produce a number anyone could hold against a scheme threshold.
Mixed farm livestock unit calculation on 65 hectares
- 45 dairy cows x 1.0 LU = 45.0 LU
- 30 beef cattle (over 2 years) x 0.65 LU = 19.5 LU
- 250 breeding ewes x 0.12 LU = 30.0 LU
- Total Livestock Units: 45.0 + 19.5 + 30.0 = 94.5 LU
- Stocking density: 94.5 LU / 65 hectares = 1.45 LU/ha (within typical grassland range)
Frequently Asked Questions
- How are livestock units worked out for different animals?
- Each animal carries a coefficient measured against a reference dairy cow rated at 1.0, so a beef suckler cow counts as 0.75, a ewe as 0.12 and a horse as 0.80. That lets you compare the grazing demand of a mixed herd on one scale.
- What stocking density counts as extensive grazing?
- Divide your total Livestock Units by the forage hectares available. Extensive grazing generally targets 0.5 to 1.0 LU per hectare, while intensive grassland systems can carry 1.5 to 2.5 LU/ha. A mixed farm running 94.5 LU over 65 hectares comes out at 1.45 LU/ha, which sits comfortably within the grassland range rather than at the extensive end.
- How do I adjust livestock units for seasonal grazing?
- Multiply the coefficient by the fraction of the year the animals are actually present. A flock of 200 ewes on the ground for 8 months is calculated as 200 x 0.12 x 8/12, which gives 16.0 adjusted Livestock Units. Applying that adjustment stops summer grazing stock inflating a stocking density figure that will later be checked against a scheme threshold.
- Why do Defra and the RPA care about stocking density?
- Stocking density is the measure used to test eligibility for agri-environment schemes, to run cross-compliance checks and to set the terms of Countryside Stewardship agreements. Because it combines every class of animal on one scale, it lets an assessor compare a dairy herd, a beef enterprise and a flock of ewes on the same basis, and it decides whether the grazing pressure on a holding is judged extensive or intensive.