Livestock Stock Unit Calculator
Calculate total livestock units for cattle, sheep, pigs and horses. See land requirement at 2 SU/ha.
Last updated: April 2026 · Source: Defra - Rural Payments and Stocking Guidance
Disclaimer
This calculator is provided for informational purposes only and should not be considered as financial or tax advice. All calculations are performed locally in your browser — no personal data is collected or sent to our servers. Rates and thresholds are sourced from HMRC and GOV.UK and are updated for the current tax year. Always verify results with HMRC or consult a qualified professional before making financial decisions.
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 (one dairy cow = 1.0 LU). Standard UK coefficients include: dairy cow 1.0, beef suckler cow 0.75, other cattle over 2 years 0.65, cattle 1-2 years 0.6, sheep (ewe) 0.12, ram 0.15, hogget 0.10, sow 0.4, finishing pig 0.12, and horse 0.80.
Total Livestock Units determine your farm's stocking density when divided by the available forage hectares. Defra and the Rural Payments Agency use stocking density thresholds for agri-environment scheme eligibility, cross-compliance checks, and Countryside Stewardship agreements. Typical extensive grazing targets 0.5-1.0 LU per hectare, while intensive grassland systems may support 1.5-2.5 LU/ha.
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. Seasonal adjustments can be applied where animals are only present for part of the year by multiplying the LU coefficient by the fraction of months grazed (e.g., 200 ewes present for 8 months = 200 x 0.12 x 8/12 = 16.0 adjusted LU).
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
- What does the Livestock Stock Unit Calculator do?
- Calculate total livestock units for cattle, sheep, pigs and horses. See land requirement at 2 SU/ha. All calculations are performed in your browser using official UK rates and thresholds.
- Are these based on Defra rates?
- Where applicable, this calculator uses rates and data from Defra, the Rural Payments Agency and industry standard references for UK agriculture.
- Does this account for regional variations?
- UK farming conditions vary by region, soil type and climate. This calculator provides national average figures — adjust for your specific location and circumstances.