- Enter Value — Type your fuel consumption figure.
- Select Units — Choose from 7 units: km/L, L/100km, MPG (US), MPG (UK), miles/L, km/gal, L/mile.
- See Results — Real-time conversion with all equivalents.
- Copy — Click 'Copy' to copy result.
Fuel Consumption Converter — Convert Between Fuel Economy Units
The Fuel Consumption Converter is a free, instant-use tool for converting between 7 fuel economy and consumption units. Whether you're comparing vehicles from different countries, planning road trips, tracking fleet efficiency, or just trying to understand fuel economy ratings, this tool handles the tricky inverse relationships automatically.
All calculations run entirely in your browser. No data is sent to any server.
Supported Units
- km/L (Kilometers per Liter) — Used in much of Asia, South America, and parts of Africa. Measures how far you can drive on one liter of fuel. Higher is better.
- L/100km (Liters per 100 Kilometers) — The standard in Europe, Australia, Canada, and China. Measures how many liters of fuel are needed for 100 kilometers. Lower is better. The inverse nature of this unit means you cannot simply multiply — conversion requires division.
- MPG US (Miles per US Gallon) — Used in the United States. Based on the US gallon (3.785 liters). The EPA window sticker on new US cars shows city and highway MPG.
- MPG UK (Miles per Imperial Gallon) — Used in the United Kingdom. Based on the Imperial gallon (4.546 liters), which is about 20% larger than the US gallon. UK MPG figures are always higher than US MPG for the same vehicle.
- Miles per Liter — Less common but useful for direct comparison between metric and imperial distances.
- km per US Gallon — Combines metric distance with US volume measurement.
- Liters per Mile — Inverse consumption rate using imperial distance.
US vs UK Gallon
This is the most common source of confusion in fuel economy comparisons. The US liquid gallon (3.785 L) and the Imperial/UK gallon (4.546 L) differ by about 20%. When comparing MPG figures between American and British sources, always convert to the same system first.
- 30 US MPG = 36.0 UK MPG = 12.75 km/L = 7.84 L/100km
- 40 US MPG = 48.0 UK MPG = 17.0 km/L = 5.88 L/100km
- 50 US MPG = 60.1 UK MPG = 21.3 km/L = 4.7 L/100km
Features
- 7 Units — Covers all major fuel economy standards worldwide.
- Inverse Handling — Correctly converts between "distance per fuel" and "fuel per distance" units.
- Real-Time — Instant conversion as you type.
- All-Unit View — See all equivalents simultaneously.
Common Use Cases
- Car Shopping — Compare fuel economy between domestic and imported vehicles.
- Travel Planning — Estimate fuel costs for road trips in different countries.
- Fleet Management — Standardize fuel tracking across international operations.
- Environmental — Compare vehicle emissions using fuel consumption as a proxy.
Privacy
All conversions run in your browser. No data is transmitted. Works offline.