Calculate fuel cost per kilometer from your L/100km consumption and fuel price per liter. Free metric driving cost calculator.
Fuel cost per kilometer is the metric equivalent of cost per mile, used worldwide to quantify driving expenses. This calculator uses your vehicle's fuel consumption in liters per 100 km and the current fuel price per liter to determine exactly how much each kilometer costs.
Knowing your per-km cost is critical for budgeting, comparing vehicles, and calculating trip expenses. At typical European fuel prices of €1.80/L with consumption of 7 L/100km, each kilometer costs about €0.126 — which adds up to €1,890 over 15,000 km annually.
This metric is especially useful for fleet managers, delivery operators, and ride-hail drivers who need to understand their per-distance operating costs in metric units.
Whether you drive a compact sedan, a full-size SUV, or a pickup truck, accurate fuel cost per kilometer figures help you plan smarter and avoid costly surprises at the pump or dealership. Use this tool regularly to track changes over time and adjust your transportation budget accordingly.
Per-kilometer fuel cost is the global standard for vehicle expense tracking. It's essential for budgeting trips, comparing vehicles, negotiating mileage reimbursements, and determining the true operating cost of any vehicle in metric markets. Results update instantly as you adjust inputs, making it easy to explore different scenarios and find the best option for your driving needs and budget.
Cost/km = (Fuel Price Per Liter × L/100km) ÷ 100
Result: €0.126 per km
At €1.80/L with 7.0 L/100km consumption: Cost/km = (1.80 × 7.0) / 100 = €0.126. Over 15,000 km/year, that's €1,890 annually.
Fuel cost per kilometer directly connects your fuel consumption to your wallet. Unlike L/100km, which is a pure consumption figure, cost per km incorporates fuel price, giving you the actual expense for every kilometer driven.
Fuel prices vary enormously worldwide. In Europe (€1.50–2.00/L), the cost per km is 2–3 times higher than in the US ($0.90–1.10/L equivalent). Middle Eastern countries with fuel subsidies can see costs as low as $0.02/km.
Electric vehicles typically cost 60–80% less per kilometer than petrol vehicles. At €0.30/kWh and 17 kWh/100km, an EV costs €0.051/km versus €0.126/km for a petrol car at 7 L/100km and €1.80/L.
Multiply your cost per km by your expected annual distance to get your fuel budget. A typical European driver covers 12,000–15,000 km/year. At €0.13/km, that's €1,560–€1,950 annually in fuel alone.
At €1.80/L, a small car (5 L/100km) costs about €0.09/km, a mid-size (7 L/100km) about €0.13/km, and an SUV (10 L/100km) about €0.18/km. Electric vehicles cost about €0.03–0.05/km depending on electricity rates.
Multiply cost per km by 1.60934. A cost of €0.12/km equals €0.193/mile. This allows direct comparison with US per-mile costs.
Diesel engines typically consume 15–25% less fuel than petrol equivalents, which often offsets the higher diesel pump price. Calculate cost per km for both to compare fairly in your market.
Fuel is typically 25–40% of total per-km driving costs. Add depreciation, insurance, maintenance, tires, and registration to get the full picture. Many European auto clubs publish annual total cost tables.
On-board computers are often optimistic by 5–10%. For accurate cost calculation, measure consumption manually at fill-ups (liters pumped divided by km driven since last fill-up, times 100).
Fuel consumption increases roughly exponentially above 80–90 km/h due to aerodynamic drag. Driving at 130 km/h can use 20–40% more fuel per km than driving at 100 km/h. The optimal speed for most cars is 60–80 km/h.