Fuel Consumption Conversion - Convert MPG, L/100km, km/L, and More
Fuel Consumption Converter
Convert fuel consumption measurements between different units quickly and accurately
Convert Fuel Consumption
Popular Fuel Consumption Conversions
Quickly convert between the most commonly used fuel consumption units.
Understanding Fuel Consumption Measurements
Fuel consumption conversions are essential for comparing vehicle efficiency, planning trips, and understanding international fuel economy standards. Different regions use various units (L/100km, MPG, km/L), and understanding these conversions is crucial for drivers, fleet managers, and car buyers.
Common Fuel Consumption Units
Metric Units
- Liters per 100 kilometers (L/100km) - Standard in Europe
- Kilometers per liter (km/L) - Used in Asia, some countries
UK & US Units
- Miles per gallon (MPG, US/UK) - US and UK standard
- Gallons (US) per 100 miles (gal/100mi) - Alternative US unit
Common Applications
| Field | Common Units | Typical Uses |
|---|---|---|
| Personal Vehicles | L/100km, MPG | Fuel economy, trip planning |
| Fleet Management | L/100km, gal/100mi | Cost control, efficiency tracking |
| Automotive Sales | L/100km, MPG, km/L | Comparing vehicle efficiency |
| Environmental Analysis | L/100km, MPG | CO₂ emissions, energy use |
Conversion Tips
- 1 US MPG = 235.215 / MPG (L/100km)
- 1 UK MPG = 282.481 / MPG (L/100km)
- 1 L/100km = 100 / (km/L)
- Lower L/100km or higher MPG means better fuel efficiency
Fuel Consumption Conversions
| Conversion | Formula | Quick Answer |
|---|---|---|
| L/100km to US MPG | 235.215 / L/100km | Divide 235.215 by L/100km |
| US MPG to L/100km | 235.215 / US MPG | Divide 235.215 by US MPG |
| L/100km to UK MPG | 282.481 / L/100km | Divide 282.481 by L/100km |
| UK MPG to L/100km | 282.481 / UK MPG | Divide 282.481 by UK MPG |
| km/L to L/100km | 100 / km/L | Divide 100 by km/L |
| L/100km to km/L | 100 / L/100km | Divide 100 by L/100km |
| US MPG to UK MPG | US MPG × 1.20095 | Multiply US MPG by 1.20095 |
| UK MPG to US MPG | UK MPG × 0.832674 | Multiply UK MPG by 0.832674 |
| gal/100mi to L/100km | gal/100mi × 2.35215 | Multiply gal/100mi by 2.35215 |
| L/100km to gal/100mi | L/100km × 0.425144 | Multiply L/100km by 0.425144 |
Our fuel consumption conversion tool provides accurate conversions between all major fuel economy units, making it easy to compare vehicles, plan trips, and optimize fuel costs. Whether you're a driver, fleet manager, or car buyer, our converter ensures precise fuel consumption conversions for any application.
Fuel Consumption Conversion Questions
Everything you need to know about fuel consumption measurements and conversions
What's the difference between US and UK/Imperial gallons for fuel economy?
US gallons are smaller (3.785 liters) than UK/Imperial gallons (4.546 liters). This means a car getting 30 US MPG would get about 36 UK MPG. When comparing fuel economy internationally, always specify which gallon measurement is being used.
Why do some countries use L/100km instead of MPG?
L/100km (liters per 100 kilometers) is more intuitive for many people because higher numbers mean worse fuel economy, just like with fuel costs. It's also easier to calculate fuel costs: multiply L/100km by distance (in hundreds of km) and fuel price per liter.
How do I calculate my actual fuel consumption?
Fill your tank completely, record the odometer reading, drive normally, then fill up again. Divide the liters used by the kilometers driven, then multiply by 100 for L/100km. For MPG: divide miles driven by gallons used.
What factors affect real-world fuel consumption vs. official ratings?
Driving style (aggressive vs. smooth), traffic conditions, weather (cold reduces efficiency), vehicle maintenance, tire pressure, air conditioning use, and cargo weight all affect fuel consumption. Real-world consumption is typically 10-30% higher than official ratings.
How do electric vehicle efficiency ratings compare to fuel consumption?
Electric vehicles use kWh/100km or miles per kWh. Roughly, 1 liter of gasoline equals about 9-10 kWh of energy. A car using 8L/100km is similar to an EV using 20-25 kWh/100km, though EVs are much more efficient at converting energy to motion.
What's considered good fuel economy for different vehicle types?
Small cars: under 6L/100km (over 40 US MPG), mid-size cars: 6-8L/100km (30-40 US MPG), SUVs: 8-12L/100km (20-30 US MPG), trucks: 10-15L/100km (15-25 US MPG). Hybrids and diesels typically achieve better economy than gasoline engines.
How do I improve my vehicle's fuel economy?
Maintain steady speeds, avoid rapid acceleration/braking, keep tires properly inflated, remove excess weight, use air conditioning efficiently, combine trips, maintain your vehicle regularly, and consider carpooling or public transport for short trips.
Why do fuel economy measurements vary between countries?
Different countries use different testing standards (EPA in US, NEDC/WLTP in Europe, JC08 in Japan). These tests simulate different driving conditions, speeds, and temperatures. EPA ratings tend to be more realistic for real-world driving than some other standards.
Have more questions? Contact us!