Fuel Cost Calculator

Calculate how much gas you'll need and the total fuel cost for any trip. Supports miles/gallons and km/liters.

Average car: 25-30 MPG | SUV: 20-25 MPG | Truck: 15-20 MPG
Estimated Trip Fuel Cost
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Gallons Needed
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Cost Per Mile
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Round Trip Cost

What if your car got better MPG?

MPGFuel UsedTrip CostSavings

How to Use

  1. Select your unit system — US (miles/gallons) or Metric (km/liters).
  2. Enter the trip distance, your vehicle's fuel efficiency, and the current gas price.
  3. Click Calculate to see fuel needed, trip cost, cost per mile, and round-trip cost.
  4. The comparison table shows how better fuel efficiency would save you money.