Fuel Cost Calculator
Estimate how much fuel you need and what it will cost for any trip. Toggle between US and Metric units.
Fuel Needed (gal)
--
Total Cost
--
Cost / Mile
--
About This Calculator
This fuel cost calculator helps you budget for road trips, daily commutes, or any drive. Enter your trip distance, your vehicle's fuel efficiency, and the current gas price. The calculator instantly shows the total fuel needed, trip cost, and cost per mile (or kilometer in Metric mode). Toggle between US units (miles, MPG, dollars per gallon) and Metric units (kilometers, L/100 km, dollars per liter) to match your region.
FAQ
How is fuel cost calculated?
In US mode, fuel needed = distance / MPG. Total cost = fuel needed x price per gallon. In Metric mode, fuel needed = (distance / 100) x L/100 km, and total cost = fuel needed x price per liter.
What fuel efficiency should I use?
Check your vehicle's EPA rating (sticker on the window or fueleconomy.gov) for combined city/highway MPG. Real-world efficiency may be 10-15% lower depending on driving style, terrain, and weather.
Does this work for diesel vehicles?
Yes. Simply enter your diesel vehicle's fuel efficiency and the current diesel price. The math works the same regardless of fuel type.
How can I reduce my fuel costs?
Maintain steady speeds, keep tires properly inflated, avoid excessive idling, remove unnecessary weight, and use cruise control on highways. Even small improvements in driving habits can reduce fuel costs by 10-20%.