Gas Mileage Calculator

Track your vehicle's fuel efficiency by calculating miles per gallon (MPG). Enter miles driven and gallons used to see your MPG, cost per mile, and how your vehicle compares to averages. Factor fuel costs into vehicle decisions with our auto loan calculator.

How to Track Accurately

1. Fill your tank completely and note the odometer reading
2. Drive normally until you need to refuel
3. Fill completely again and note gallons added
4. Calculate miles driven (new odometer - old odometer)
5. Enter values in the calculator

Factors Affecting Fuel Economy

• Driving habits (aggressive acceleration/braking reduces MPG)
• Speed (optimal fuel economy is typically 45-65 mph)
• Tire pressure (underinflated tires waste fuel)
• Vehicle maintenance (tune-ups, air filters, etc.)
• Weather and terrain (cold weather and hills reduce MPG)

Tips to Improve Fuel Economy

• Accelerate gradually and anticipate stops
• Remove excess weight from your vehicle
• Use cruise control on highways
• Keep tires properly inflated

Related Auto & Budget Calculators

Calculate your true commute costs as part of salary comparisons. Factor fuel into your budget planning. Compare fuel savings vs car payments in ROI calculations for hybrid or EV vehicles. Find fuel discounts with gas station apps.