Fuel Cost & Road Trip Calculator
Calculate the total fuel cost for any trip, compare vehicles, and estimate cost per person for road trips.
Check your car's specs or trip computer
Check GasBuddy or your local servo
To calculate cost per person
How to Use
1. Enter your trip distance in km 2. Enter your car's fuel consumption (L/100km) — check your manual or trip computer 3. Enter the current fuel price in cents per litre 4. Add passengers to split the cost 5. Toggle return trip to double the calculationTip: Add 10–15% to the calculated fuel for highway driving variations, detours, or AC use.
Formula
Litres = Distance × Consumption ÷ 100 | Cost = Litres × Price per LitreFrequently Asked Questions
Where do I find my car's fuel consumption?
Check your owner's manual, the fuel consumption label (usually on a sticker on the car), your trip computer, or the Green Vehicle Guide at greenvehicleguide.gov.au.
How do I find current fuel prices?
Apps like GasBuddy, MotorMouth, or FuelMap show real-time prices. In Australia, fuel prices are typically lowest on Tuesdays and highest on weekends.
Does air conditioning affect fuel use?
Yes — AC increases fuel consumption by 5–20% depending on conditions. At highway speeds, the aerodynamic drag of open windows can be worse than AC.
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