Fuel Cost Calculator
Estimate trip fuel costs from distance, consumption and price — metric or imperial.
The Fuel Cost Calculator estimates how much a trip will cost in fuel: enter the distance, your car's consumption and the local fuel price, and it returns the liters needed, the trip cost and the cost per 100 km. Metric and imperial modes cover L/100km-and-km and mpg-and-miles drivers alike.
Knowing trip costs turns vague trips into numbers: a 500 km drive at 7.5 L/100 km and $1.60/L costs about $60 — the difference between 'let's drive' and 'let's check the train'. The tool also projects a rough monthly figure for regular commutes.
Real consumption depends on traffic, load, speed and driving style — highway cruising at moderate speed is usually several percent better than the rated figure. Use the tool as a planning estimate. Everything runs locally in your browser.
Fuel needed
37.5 L
500 km trip
Trip fuel cost
$60.00
$12.00 per 100 km
Monthly (×8 trips)
$480.00
estimate
Cost = distance ÷ 100 × consumption × price. Driving slower on highways, smooth acceleration and correct tire pressure all lower real consumption below the rated figure.
How to use the Fuel Cost Calculator
- Choose metric (km, L/100km) or imperial (miles, mpg) mode.
- Enter the trip distance.
- Enter your car's rated or recent consumption/economy.
- Enter the local fuel price per liter or gallon.
- Read the fuel needed, trip cost and per-100-km cost.
Frequently asked questions
How do I calculate fuel cost for a trip?
Fuel = distance ÷ 100 × consumption in L/100km; cost = fuel × price per liter. A 500 km trip at 7.5 L/100km uses 37.5 liters. The calculator does this instantly in either unit system.
What consumption figure should I use?
Your recent real-world average from the trip computer is best — rated figures are usually optimistic. For planning, add 10% to the rated number to cover traffic and load.
Does this include tolls or wear?
No — it covers fuel only. Tolls, parking, insurance depreciation and maintenance add real cost per kilometer; adding a per-day car-cost figure gives the honest total for travel decisions.
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