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Machinery Diesel Usage Calculator
Calculate fuel consumption and cost per hectare, acre or hour for any farm operation. Compare against UK benchmarks and download a PDF report.
Job Details
UK average ~77p/L (2026)
UK Benchmarks 2026
Ploughing (heavy soil)
30–45 L/ha12–18 L/ac
Cultivation / Harrowing
15–25 L/ha6–10 L/ac
Drilling / Seeding
10–20 L/ha4–8 L/ac
Spraying / Spreading
5–12 L/ha2–5 L/ac
Mowing / Topping
12–22 L/ha5–9 L/ac
Baling / Wrapping
10–18 L/ha4–7 L/ac
UK averages for 150–250hp tractors. Actual varies by soil type, implement condition and operator technique.
How Much Diesel Should Your Tractor Use?
With UK red diesel averaging around 77p per litre, knowing your consumption per hectare or per hour is essential for accurate job costing and contracting quotes. A 150–200hp tractor ploughing heavy ground typically uses 30–45 L/ha, while lighter operations like spraying run as low as 5–12 L/ha.
Tips to Reduce Fuel Costs
- Match machine size to the task — oversized tractors waste fuel at light loads
- Maintain correct tyre pressure to reduce slippage and rolling resistance
- Use eco modes and lower RPM where possible (1,500–1,800 rpm is often optimal)
- Minimise idling — a large tractor burns 3–6 L/hr with zero output
- Service air filters and injectors regularly for optimal combustion efficiency
Frequently Asked Questions — Farm Diesel Usage
- What is a typical litres per hectare figure for UK farm machinery?
- Typical UK figures vary considerably by operation. Ploughing heavy soil requires the most fuel at 30–45 L/ha for a 150–200hp tractor. Cultivation and harrowing sits at 15–25 L/ha, drilling and seeding at 10–20 L/ha, and spraying or fertiliser spreading at just 5–12 L/ha due to the low draught requirement. Baling and mowing typically runs 10–22 L/ha. These benchmarks are for well-maintained, correctly loaded tractors — worn tyres, dirty air filters, or poorly matched implement sizes will push consumption higher.
- How do I calculate diesel cost per hectare?
- Divide total litres used by the area covered to get litres per hectare, then multiply by the price per litre. For example, 145 litres used over 12.5 ha gives 11.6 L/ha. At 77p/litre, that is £8.93 per hectare. This calculator performs this automatically — enter your total litres, cost per litre, and area worked.
- What is the current UK red diesel price in 2026?
- UK red diesel (rebated gas oil) averaged approximately 75–80p per litre in early 2026. Prices fluctuate with global oil markets and exchange rates. Large farm businesses purchasing direct from distributors on contract typically achieve better rates than spot purchases. The calculator defaults to 77p/litre but you should enter the current price from your last invoice for accurate job costing.
- How can I reduce fuel consumption on my farm?
- The most impactful steps are: matching tractor size to the task (an oversized tractor at light load is inefficient); maintaining correct tyre inflation (over-inflation increases rolling resistance; under-inflation causes slippage); operating at the lowest RPM that achieves target PTO or hydraulic performance; minimising idle time (a 200hp tractor burns 4–6 L/hr at idle); and keeping air filters, injectors and fuel filters serviced. GPS auto-steer also significantly reduces overlap on spraying and drilling operations.