Fuel Cost Calculator

How fuel cost is calculated

Divide trip miles by vehicle MPG to estimate gallons needed, then multiply gallons by the price per gallon.

Example

A 300-mile trip in a vehicle averaging 30 MPG uses about 10 gallons. At $3.25 per gallon, estimated fuel cost is $32.50.

What can change the real cost

Traffic, speed, weather, idling, towing and actual fuel prices can change real-world MPG and total cost. Use this as a planning estimate.

Worked road-trip example

See the fuel cost for a 900-mile trip at 30 MPG, then change the inputs for your own vehicle.

Plan the full driving cost

Fuel is only one part of a trip budget. Use the Road Trip Cost Calculator for a broader trip estimate, or the Mileage Reimbursement Calculator when you are tracking reimbursable business driving.

Add this fuel calculator to your site free

Travel, fleet and personal-finance publishers can embed a useful QuickTools calculator with attribution in minutes. No signup is required to generate the widget.

Reach people actively calculating driving costs

Fuel cards, fleet services, roadside products and other genuinely useful driving-cost businesses can reserve a clearly labeled founding placement beside this calculator. Founding placements start at $49 for 90 days and include our traffic guarantee.