β½ Fuel Cost Calculator
Estimate what a drive really costs in gas: total fuel cost, cost per person and cost per mile β great for planning road trips and splitting expenses.
Frequently Asked Questions
How do I calculate the fuel cost of a trip?
Fuel cost = (distance Γ· MPG) Γ price per gallon. For example, a 300-mile drive at 28 MPG with gas at $3.20/gal needs about 10.7 gallons, or roughly $34 β double it for a round trip.
Should I use my car's rated MPG?
Window-sticker MPG assumes mixed driving. Steady highway cruising usually beats the rating, while city stop-and-go falls below it. For a road trip the rated number is a good starting point; for city driving, knock off 15β25%.
What gas price should I enter?
Use the price where you will actually fill up β US prices vary a lot by state and even by neighborhood. Checking a local station or a national daily average (such as AAA's) gives you the most realistic budget.
How do I split gas costs fairly between passengers?
The simplest fair split is the total fuel cost divided by everyone in the car β that's what the "people splitting the cost" field does. Keep in mind fuel is only part of a trip's cost: tolls, wear and tear run roughly $0.15β$0.30 per mile extra.
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