Fuel Cost Calculator — What Will That Road Trip Cost?
Distance ÷ MPG × price per gallon = your trip's fuel bill. Round trip toggle, passengers split, and US gallons vs UK/CA liters support.
Quick answer: Free fuel cost calculator: trip distance, vehicle MPG and gas price — total fuel cost per person, plus return-trip and one-way toggles.
–Total fuel cost
–Per person
–Gallons needed
–Cost per 100 miles
How to use
- Open this page on any device — no signup needed.
- Fill in the fields above.
- Get your result instantly — nothing is uploaded.
About this tool
Road-trip budgeting starts with one formula: fuel cost = (distance ÷ MPG) × price. This calculator adds the details that matter — round trips, passengers splitting the cost, and unit switching for US (gallons, MPG) vs UK/Canada (liters, L/100km implied via MPG conversions). Cheap way to decide drive vs fly before prices surprise you.
FAQ
How accurate is MPG on highways?
Highway driving usually beats city MPG by 20–30%; use your real average from the car's trip computer for best results.
Can I use liters per 100km?
Yes — switch the unit toggle; the math converts internally.