Free online gas mileage calculator. Calculate fuel consumption per 100km and cost per km. Input distance, fuel amount and price to get MPG, cost per mile and annual fuel cost estimate. Pure client-side processing, no registration required.
Zero-dependency · Works offline
Updated: 2026-07-26
Trip Data
Results
30.0 MPG
Fuel Economy
$0.12Cost per Mile
$35Trip Fuel Cost
$1,400Est. Annual Cost
30.0MPG
7.8L/100km
88.8CO₂ (kg)
About Gas Mileage Calculator
Free online gas mileage calculator. Calculate fuel consumption per 100km and cost per km. Input distance, fuel amount and price to get MPG, cost per mile and annual fuel cost estimate. Pure client-side processing, no registration required.