MPG to L/100km and km/L (kmpl) in one place: 50 mpg to L/100km, UK vs US mpg, mpg to kml, and litres-per-mile style units. For fleet fuel labels, import cars, and engineering. Free, instant, no sign-up.
⛽ Popular searches: mpg to kml, mpg to kmpl, 50mpg to l/100km, 50 mpg to l/100km, 15mpg to l/100km, 30 mpg to kmpl, and convert 25 mpg to kmpl.
👇 Use the calculator below: type a number, choose mpg (US or UK), then pick L/100km, km/L, or another unit — results update instantly.
International System of Units (SI) measurements
Traditional British and American measurements
Miles per gallon tells you how far a vehicle can travel on one gallon of fuel. A higher number usually means better economy: the car uses less fuel to cover the same distance.
Liters per 100 kilometers is common outside the US. It tells you how many liters of fuel you need to drive 100 km. Here, a lower number is better—the opposite intuition from miles per gallon, so conversions help when you compare window stickers or fleet reports from different countries.
Kilometers per liter (sometimes written as km per L or "kmpl") is another distance-per-fuel measure: higher is better, similar in spirit to miles per gallon.
US vs UK gallons are different sizes. A "mpg" number on a European spec sheet may use an imperial (UK) gallon, while US EPA labels use the smaller US gallon. Always pick the matching gallon type in the tool when you convert.
Use the calculator above for exact numbers; the reference table below shows typical mile-per-gallon values next to their metric equivalents for quick study.
Quick reference for popular US mpg values. Formula: L/100km = 235.215 / MPG and km/L = MPG × 0.4251. For UK mpg, use L/100km = 282.481 / UK MPG.
| MPG | L/100km | km/L |
|---|---|---|
| 15 | 15.68 | 6.38 |
| 20 | 11.76 | 8.50 |
| 25 | 9.41 | 10.63 |
| 30 | 7.84 | 12.75 |
| 35 | 6.72 | 14.88 |
| 47 | 5.00 | 19.98 |
| 50 | 4.70 | 21.26 |
| 60 | 3.92 | 25.51 |
| 75 | 3.14 | 31.88 |
| 100 | 2.35 | 42.51 |
Related conversion intents
mpg (miles per gallon) - higher values = better efficiency
L/100km, km/L - lower L/100km = better efficiency
mpg (UK) - different gallon size than US
Vehicle comparison, fuel cost calculation, efficiency analysis
Fuel consumption units measure how efficiently a vehicle uses fuel. The most common units are miles per gallon (mpg) in the US and liters per 100 kilometers (L/100km) in most other countries. Understanding these conversions is essential for comparing vehicles across different markets and calculating fuel costs.
Miles per gallon (mpg) measures distance traveled per unit of fuel consumed, where higher values indicate better efficiency. Liters per 100 kilometers (L/100km) measures fuel consumed per fixed distance, where lower values indicate better efficiency. Our converter handles all these relationships accurately.
This tool is essential for car buyers, fleet managers, travelers, and anyone working with vehicles from different markets. It provides precise conversions between fuel efficiency units, ensuring accurate comparisons and calculations for fuel costs, environmental impact, and vehicle performance across various regions and standards.
Gallon Differences: US gallon (3.785 L) vs UK gallon (4.546 L) affect mpg values.
Driving Conditions: Real-world consumption may differ from official ratings.
Fuel Types: Different fuels have different energy densities.
Vehicle Factors: Age, maintenance, and driving style affect actual consumption.
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