Estimate the fuel a trip needs and what it costs, from the distance, the efficiency in L/100 km, km/L or US MPG, and the price per liter.
Calculations happen locally. We do not send your values to our server.
500 km at 7.5 L/100 km uses 37.5 liters and costs 56.25 at 1.50 per liter. In km/L, 320 km at 16 km/L needs 20 liters, or 3,400 at 170 per liter, and 400 km at 30 MPG (US) uses about 31.36 liters.
In L/100 km the distance is multiplied by the consumption and divided by 100. In km/L the distance is divided by the efficiency. In MPG the distance is converted to miles by dividing by 1.609344, divided by the MPG figure to get US gallons, then multiplied by 3.785411784 to get liters. The cost is the liters multiplied by the price per liter.
Distance is always entered in kilometers and the price always per liter, even in MPG mode, so convert miles or a per-gallon price first. US and imperial gallons are different sizes, so an imperial MPG figure entered here underestimates fuel use. The distance is one way, so double it for a return trip.
Choose L/100 km, km/L or MPG (US) before entering the efficiency. In L/100 km, lower is better: 500 km at 7.5 L/100 km needs 37.5 liters, costing 56.25 at 1.50 per liter. In km/L, higher is better: 320 km at 16 km/L needs 20 liters, or 3,400 at 170 per liter. Distance is always entered in kilometers and price per liter, even in MPG mode, so convert miles or a per-gallon price first.
In MPG (US) mode the tool converts kilometers to miles and US gallons to liters. A 400 km drive at 30 MPG uses about 31.36 liters and costs 37.63 at 1.20 per liter. UK and other imperial MPG figures use a larger gallon, so entering them here would underestimate fuel use. The distance is one way unless you enter otherwise: double it for a return journey, and add detours you expect to drive.
Rated consumption is measured under test conditions. Motorway speed, heavy loads, roof boxes, air conditioning, cold weather, hills and congestion can raise real use considerably. For budgeting, run a second calculation with a higher consumption figure: 250 km at 5.8 L/100 km uses 14.5 liters and costs 26.83 at 1.85, while the same trip at 7 L/100 km uses 17.5 liters and costs 32.38. Tolls, parking and charging costs for hybrid or electric driving are not included.
| Input | Result |
|---|---|
500 km · 7.5 L/100 km · 1.5 | 37.5 L · 56.25 |
320 km · 16 km/L · 170 | 20 L · 3,400 |
400 km · 30 MPG (US) · 1.2 | 31.36 L · 37.63 |
250 km · 5.8 L/100 km · 1.85 | 14.5 L · 26.83 |
250 km · 7 L/100 km · 1.85 | 17.5 L · 32.38 |
Match whatever your car displays. L/100 km and km/L describe the same thing in opposite directions: in L/100 km a lower number is better, while in km/L a higher number is better. MPG (US) is for figures from the United States; a UK or other imperial MPG figure has to be converted first.
Rated consumption comes from test conditions. Motorway speed, heavy loads, roof boxes, air conditioning, cold weather, hills and congestion all raise real use. Run the calculation again with a worse figure to see the range: 250 km at 5.8 L/100 km costs 26.83 at 1.85, while the same trip at 7 L/100 km costs 32.38.
Any currency works, because the cost simply multiplies the liters by the price you enter, and the result is in that same currency. Electric vehicles are not covered: their consumption is measured in kWh per 100 km and charged per kWh, not per liter, so this tool would not describe them.
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