How much will fuel cost for your road trip or commute?
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Fuel cost = distance ÷ fuel economy × price per gallon (or distance × L/100 km ÷ 100 × price per litre). Choose your units — the calculator handles US and UK gallons, litres, miles and kilometres.
Real-world fuel economy is usually lower than the official figure, especially at high speed, in cold weather or with a heavy load.
| Distance | 300 |
| Distance in | Miles |
| Fuel economy | 30 |
| Fuel economy unit | MPG (US) |
| Fuel price | 3.5 |
| Price per | US gallon |
| Return trip? | Yes |
| People sharing the cost | 1 |
| Currency | $ Dollar |
| Fuel cost | $70.00 |
| Fuel used | 20 US gallons |
| Distance | 600 mi (return trip) |
| Cost per mile | $0.117 |
$70.00.
| Distance | 400 |
| Distance in | Kilometres |
| Fuel economy | 6.5 |
| Fuel economy unit | L/100 km |
| Fuel price | 1.75 |
| Price per | Litre |
| Return trip? | No |
| People sharing the cost | 1 |
| Currency | € Euro |
| Fuel cost | €45.50 |
| Fuel used | 26 litres |
| Distance | 400 km |
| Cost per km | €0.114 |
€45.50.
Divide the miles by your MPG to get gallons, then multiply by the price per gallon. 300 miles ÷ 30 MPG × $3.50 = $35.
L/100 km ÷ 100 × price per litre: 6.5 ÷ 100 × €1.75 = €0.11 per km.
No — a UK gallon is 4.546 litres and a US gallon 3.785 litres, so UK MPG figures are about 20% higher.
Drive smoothly, keep to the speed limit, keep tyres inflated and remove roof boxes.