Farm Biodiversity Calculator

The score is calculated across four pillars: Crop Diversity (up to 25 points), Soil Health (up to 25 points), Habitat & Connectivity (up to 30 points), and Farming System practices (up to 20 points). Each pillar rewards practices known to support on-farm biodiversity, such as crop rotation, reduced pesticide use, hedgerows, and wetland retention. The total gives you a score out of 100.

Scores above 70 indicate strong biodiversity management with a diverse, habitat-rich farm. Scores between 45 and 70 suggest a moderately biodiverse farm with clear areas for improvement. Scores below 45 indicate significant biodiversity pressure, often from intensive practices, low habitat cover, or monoculture cropping.

Tillage physically disturbs soil ecosystems, killing invertebrates, fungi, and beneficial microbes. Conventional deep ploughing has a much greater negative impact than no-till or conservation tillage, which preserve soil structure and the organisms that live within it. These organisms are foundational to the food web supporting birds, mammals, and insects.

Hedgerows, grass margins, and wildflower strips act as refuges and corridors for wildlife — providing nesting sites for birds and insects, foraging habitat for pollinators, and movement routes for mammals. Even a small percentage of farm area dedicated to these features can significantly increase biodiversity scores and real-world species richness.

Farm size itself does not directly raise or lower your score, but it provides context — larger farms may have greater total biodiversity potential, while the practices you apply determine the score. The calculator focuses on the proportion and quality of management rather than absolute area.

Yes. A farm with no synthetic inputs but also no habitat features, poor crop diversity, and intensive livestock management can still receive a moderate-to-low score. Biodiversity depends on the combined effect of all practices — chemical inputs are just one factor among many.

The highest-impact improvements typically involve adding or restoring hedgerows and woodland, increasing crop rotation complexity, adopting no-till or conservation tillage, reducing synthetic pesticide use, and creating or maintaining wetlands and buffer strips. Even incremental changes across multiple practices can meaningfully lift your score.

This calculator offers a fast, accessible snapshot of your farm's biodiversity profile using key indicators. Tools like the Cool Farm Tool and FABLE Calculator offer deeper scientific modelling including greenhouse gas accounting, water use, and long-term land-use scenario planning. This tool is ideal for a quick assessment and identifying priority areas before using more detailed platforms.