Planning a road trip budget requires knowing how much you'll spend on fuel, which depends on the distance, your vehicle's fuel efficiency, and current fuel prices. This gas trip cost calculator computes your total fuel expenses for a journey based on the trip distance, your vehicle's miles per gallon (or equivalent), and the price of fuel per gallon or liter. It's useful for planning road trip budgets, comparing the cost of driving versus other transportation options, or splitting fuel costs fairly among passengers on a shared trip. Simply enter your trip details to get an instant estimate of total fuel costs for your journey.