Free Farming Tools
Practical precision agriculture tools to help UK farmers make better decisions. No account required. New to precision agriculture? Start with our complete UK guide.
Spray Day Calculator
Check if weather conditions are suitable for crop spraying. Uses live forecast data for your exact location.
Use tool →Livestock Temperature Stress Calculator
Monitor heat and cold stress risk for cattle, sheep, pigs and poultry. AHDB and DEFRA-based thresholds with management recommendations.
Use tool →Rainfall Tracker
Compare recent rainfall at your location to the 1991-2020 climate normal. Spot dry spells and wet seasons.
Use tool →Stocking Rate Calculator Basic
Convert cattle, sheep, horses and goats to Livestock Units per hectare using the DEFRA Countryside Stewardship conversion table. Scheme compliance check coming soon.
Use tool →NVZ Compliance Calculator
NVZ check, livestock nitrogen loading vs the 170 kg N/ha/year limit, a spreading closed-period checker, and a slurry storage capacity calculator. DEFRA standard values.
Use tool →Potato Blight Risk Checker
Check late blight risk at your location using the Hutton Criteria — minimum temperature 10°C and 6+ hours at 90% humidity over two days. Forecast-based, indicative.
Use tool →Growing Degree Days Calculator
Track accumulated heat units for your crop and location, with the current growth stage and a forecast of the next. Includes grass T-sum 200 spring nitrogen timing and forage maize Ontario Heat Units.
Use tool →LERAP Buffer-Zone Calculator
Work out the minimum legal aquatic buffer zone for a horizontal boom sprayer from watercourse width, dose and nozzle drift rating, and keep a dated record.
Use tool →Grassland Grazing Checker
SFI/CS grassland actions are managed by sward height, not stocking rate. Enter your action and measured sward height for graze / hold / remove guidance and the seasonal rules.
Use tool →Field NDVI Viewer
See how your fields vary, from orbit. Free Sentinel-2 satellite crop-vigour maps of any UK field, updated with every pass. The zero-cost first step into precision farming.
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