Free Road Trip Calculator - Estimate Gas & Travel Costs
Calculate fuel costs for your next road trip based on distance and fuel efficiency.
Formula & Methodology
The Road Trip Fuel Calculator divides your trip distance by your vehicle's fuel economy to find how much fuel you will burn, then multiplies that by the price per unit (gallon or litre) for the total fuel cost. Enter the distance, your car's MPG or L/100km, and the local fuel price.
- Fuel Needed = Distance / Fuel Economy
- Trip Cost = Fuel Needed × Price per Unit
Worked Example
Using the Road Trip Fuel Calculator: apply the formula above to your input values. For instance, Fuel Needed = Distance / Fuel Economy, then Trip Cost = Fuel Needed × Price per Unit. The tool performs each step instantly and shows the result.
Frequently Asked Questions
How do I estimate fuel cost for a road trip?
Divide trip distance by your vehicle’s fuel economy to get fuel needed, then multiply by the price per gallon or litre.
How can I lower road-trip fuel costs?
Maintain steady speeds, keep tyres inflated, reduce load, and plan routes to avoid unnecessary detours and traffic.
Should I split fuel cost among passengers?
Yes. Dividing the total by the number of travellers gives a fair per-person share for the trip.