Calculate total fuel cost and consumption based on distance and fuel price.
In metric mode, fuel needed = distance ÷ 100 × litres per 100 km. In imperial mode, fuel needed = distance ÷ miles per gallon. The cost is the fuel needed times the price. A 300 km trip in a car using 7 L/100 km at 1.80 per litre needs 21 litres and costs 37.80.
Your car's real fuel use depends on speed, traffic, air conditioning and load, so official figures are usually optimistic. If you know what your car actually averages, use that.
A US gallon is 3.785 litres and a UK gallon is 4.546 litres, so the same car shows a higher MPG figure in the UK. The maths still works as long as your MPG and your price per gallon use the same kind of gallon. To turn US MPG into L/100 km, divide 235.2 by the MPG; for UK MPG, divide 282.5 by it. 30 US MPG is about 7.8 L/100 km.
Divide the distance by 100, multiply by your car's litres per 100 km, then multiply by the price per litre. Or, with miles, divide the distance by your MPG and multiply by the price per gallon.
No. Enter the round-trip distance if you're driving there and back.
Small petrol cars often use 5 to 7 L/100 km (about 34 to 47 US MPG); larger SUVs 8 to 12 L/100 km. Your car's trip computer gives the best figure.
No, only the symbol shown. Enter the price in whatever currency you use.
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