Application Rate Converter
Convert fertiliser, seed and spray rates between per-hectare and per-acre. Supports kg, tonnes, litres, gallons and cwt.
Rate Converter
Select a unit, enter your rate and choose the direction to convert.
1 hectare = 2.47105 acres · 1 acre = 0.404686 hectares
Common Reference Rates
Typical UK application rates for common products.
| Product | per Hectare | per Acre |
|---|---|---|
| Calcium Ammonium Nitrate (CAN) | 150–200 kg | 61–81 kg |
| Urea (46% N) | 100–200 kg | 40–81 kg |
| Compound fertiliser (NPK) | 250–400 kg | 101–162 kg |
| Lime (soil pH correction) | 2,500–5,000 kg | 1,011–2,023 kg |
| Grass seed (new ley) | 35–40 kg | 14–16 kg |
| Winter wheat seed | 150–200 kg | 61–81 kg |
| Spring barley seed | 130–175 kg | 53–71 kg |
| Oilseed rape seed | 3–4 kg | 1.2–1.6 kg |
| Herbicide (typical) | 1–5 litres | 0.4–2 l |
| Fungicide (typical) | 0.5–2 litres | 0.2–0.8 l |
| Slurry (cattle) | 25–50 m³ | 10–20 m³ |
| Pig slurry | 20–40 m³ | 8–16 m³ |
Reference figures only. Always follow product label rates and agronomist recommendations.
Related Tools & Guides
Spreading & Application Equipment
Useful kit for measuring and applying at the right rate
Calibration Jug (10L)
Measure sprayer output accurately — essential for correct application rates
Fertiliser Spreader (push)
Small hand-push spreader for paddocks, headlands and small plots
Measuring Wheel
Walk fields to measure area before calculating total quantity needed
PPE Spraying Kit
Gloves, goggles and apron — required when handling crop protection products
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