Gas Mileage Calculator
Calculate MPG, fuel costs, trip expenses, and compare vehicle efficiency.
Calculate Your Fuel Efficiency
Enter the distance traveled and fuel used to calculate your vehicle's fuel efficiency.
Calculate Fuel Cost
Enter distance, fuel efficiency, and gas price to calculate total fuel cost.
Trip Cost Estimator
Plan your trip by entering details to estimate total fuel expenses.
Compare Vehicle Fuel Costs
Compare fuel costs between two vehicles over a given distance.
Vehicle 1
Vehicle 2
Fuel Efficiency Tips
Maintain Steady Speed
Use cruise control on highways to maintain a consistent speed and improve fuel efficiency by up to 14%.
Check Tire Pressure
Properly inflated tires can improve fuel economy by up to 3%. Check monthly and before long trips.
Reduce Idling
Turn off your engine if stopped for more than 60 seconds. Idling wastes fuel and produces emissions.
Regular Maintenance
Keep your engine tuned and replace air filters regularly to maintain optimal fuel efficiency.
Understanding Fuel Efficiency
MPG (Miles Per Gallon)
The standard US measurement for fuel efficiency. Higher MPG means better fuel economy. Formula: MPG = Miles Driven / Gallons Used
L/100km (Liters per 100 kilometers)
The metric standard used in most countries. Lower L/100km means better fuel economy. Formula: L/100km = (Liters Used / km) x 100
km/L (Kilometers per Liter)
Alternative metric measurement. Higher km/L means better fuel economy. Formula: km/L = Kilometers Driven / Liters Used
Fuel Efficiency Ratings Guide
| Rating | MPG | L/100km | Typical Vehicles |
|---|---|---|---|
| 40+ | Less than 5.9 | Hybrids, Electric, Small cars | |
| 30-39 | 5.9-7.8 | Compact cars, Sedans | |
| 20-29 | 7.9-11.8 | SUVs, Crossovers | |
| Less than 20 | More than 11.8 | Trucks, Large SUVs, Sports cars |