Calculate your vehicle's fuel efficiency in miles per gallon (MPG).
About This Calculator
MPG Calculator - Calculate Miles Per Gallon
Calculate your vehicle's fuel efficiency instantly with our free MPG calculator. Simply enter miles driven and gallons used to get accurate miles per gallon (MPG) measurements.
How to Calculate MPG
Calculating your vehicle's fuel efficiency is simple:
- Fill up your tank completely
- Reset your odometer to zero
- Drive normally until you need to refuel
- Fill up again and note the gallons needed
- Calculate MPG using our calculator
MPG Formula
MPG = Miles Driven / Gallons Used
For example, if you drove 300 miles and used 10 gallons of gas:
MPG = 300 / 10 = 30 MPG
Understanding Fuel Efficiency
What is MPG?
MPG (Miles Per Gallon) measures how far your vehicle can travel on one gallon of fuel. Higher MPG means better fuel efficiency and lower fuel costs.
Typical MPG Ratings:
| Vehicle Type | City MPG | Highway MPG | Combined |
|---|---|---|---|
| Small Car | 25-35 | 35-45 | 28-38 |
| Midsize Car | 20-30 | 30-40 | 23-33 |
| SUV | 15-25 | 20-30 | 17-25 |
| Truck | 15-20 | 20-25 | 16-22 |
| Hybrid | 45-55 | 50-60 | 48-55 |
| Electric | 100+ MPGe | 100+ MPGe | 100+ MPGe |
Tips to Improve Your MPG
Driving Habits:
- Drive at steady speeds (55-65 mph is optimal)
- Avoid rapid acceleration and hard braking
- Use cruise control on highways
- Combine trips when possible
- Reduce idling time
Vehicle Maintenance:
- Keep tires properly inflated
- Use recommended motor oil
- Replace air filters regularly
- Keep engine tuned
- Remove excess weight from trunk
Expected Improvements:
- Proper tire pressure: +3% MPG
- Smoother driving: +10-15% MPG
- Regular maintenance: +4% MPG
- Reduced weight: +1-2% MPG per 100 lbs
MPG vs. Other Measurements
Conversions:
- Liters per 100km: Common in Europe and Canada (lower is better)
- km per Liter: Used in some countries (higher is better)
- MPGe: Miles Per Gallon equivalent for electric vehicles
Quick Conversion:
- 30 MPG = 7.84 L/100km
- 25 MPG = 9.41 L/100km
- 20 MPG = 11.76 L/100km
Why Track Your MPG?
Benefits of Monitoring Fuel Efficiency:
- Save Money: Identify when your vehicle needs maintenance
- Detect Problems: Declining MPG may indicate issues
- Compare Vehicles: Make informed decisions when car shopping
- Better Planning: Estimate fuel costs for trips
- Environmental Impact: Track your carbon footprint
Frequently Asked Questions
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