Gas Mileage Calculator
Calculate your vehicle's fuel efficiency, track MPG, and analyze fuel costs with detailed projections and efficiency ratings
Gas Mileage Calculator
Miles
Miles
Gallons
$ per gallon
Trip Summary
300 miles driven
using 12.5 gallons of fuel
Results
24
Miles per Gallon
Fair
$0.146
Cost per Mile
$43.75
Total Trip Cost
Cost Breakdown
$14.58
Cost per 100 Miles
12.5 gal
Fuel Used
$3.5
Price per Gallon
Annual Fuel Cost Projections
10,000 mi/yr
$1,460
416.7 gallons
12,000 mi/yr
$1,752
500 gallons
15,000 mi/yr
$2,190
625 gallons
20,000 mi/yr
$2,920
833.3 gallons
Fuel Efficiency Guidelines
EPA Efficiency Ratings
- Excellent:40+ MPG
- Very Good:30-39 MPG
- Good:25-29 MPG
- Fair:20-24 MPG
- Below Average:15-19 MPG
- Poor:Below 15 MPG
Vehicle Type Averages
- Hybrid Vehicles:40-50 MPG
- Compact Cars:28-36 MPG
- Mid-size Cars:25-32 MPG
- SUVs:20-28 MPG
- Pickup Trucks:15-25 MPG
- Large SUVs:12-20 MPG
What is Gas Mileage Calculator?
A gas mileage calculator helps you track your vehicle's fuel efficiency and fuel costs. By recording your odometer readings and fuel purchases, you can calculate your miles per gallon (MPG), cost per mile, and make informed decisions about your transportation expenses.
How to Use This Calculator
- Record your starting odometer reading before filling up your tank
- Drive normally until you need to refuel
- Fill up your tank completely and record the gallons added and current odometer reading
- Enter the values in the calculator to get your MPG and cost analysis
Key Calculations
- Miles per Gallon (MPG): Miles driven ÷ gallons of fuel used
- Cost per Mile: Total fuel cost ÷ miles driven
- Cost per 100 Miles: Cost per mile × 100 (standard comparison metric)
- Annual Projections: Estimated yearly fuel costs based on your current efficiency
Tips for Better Fuel Economy
- Maintain steady speeds and avoid rapid acceleration/deceleration
- Keep tires properly inflated and aligned
- Remove excess weight and roof cargo when not needed
- Combine errands into single trips
- Use cruise control on highways
- Keep up with regular vehicle maintenance
Understanding Your Results
Your fuel efficiency rating is based on EPA guidelines and typical vehicle performance. Factors that can affect your results include driving conditions (city vs. highway), weather, vehicle condition, driving habits, and terrain.
FAQ - Gas Mileage Calculator
The calculation is very accurate if you provide precise data. For best results, use a full tank to full tank measurement method, which eliminates variables from partial fills. The accuracy depends on consistent filling practices.