Fuel Consumption Converter
Convert fuel economy ratings among US MPG, UK MPG, liters per 100 km, kilometers per liter, and miles per liter.
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Fuel efficiency metrics differ significantly across global automotive markets. In the United States, vehicle efficiency is commonly measured in US miles per gallon, whereas European standards use liters per 100 kilometers, and other regions rely on kilometers per liter, miles per liter, or imperial UK miles per gallon. This online fuel converter translates numeric ratings accurately across all five major efficiency standards. To calculate a conversion, enter your numeric fuel economy figure, select the initial unit of measurement, and pick the target unit. The tool supports standard car ratings, hybrid consumption figures, and road trip calculations. Converted results are calculated with precision and presented rounded to ten decimal places for clear comparison. Note that inverted metrics like liters per 100 kilometers require a non-zero positive number because distance-over-volume calculations involve mathematical division. If you enter zero or leave an incompatible entry, the calculation cannot complete. For standard vehicle data, select your starting unit to view direct, dependable comparisons.
Instructions
- Enter the numeric fuel efficiency value into the input field (defaults to 30).
- Choose your source unit from the starting dropdown menu (such as US MPG, UK MPG, or Liters per 100 km).
- Select your target unit from the destination dropdown menu.
- View the converted fuel economy value rounded to 10 decimal places in the output panel.
Examples
- Convert 30 US MPG to Liters per 100 km: results in approximately 7.8404874436 L/100 km.
- Convert 8 Liters per 100 km to US MPG: results in approximately 29.4018279135 US MPG.
- Convert 15 Kilometers per Liter to US MPG: results in approximately 35.2821934962 US MPG.
FAQ
What is the difference between US MPG and UK MPG?
US gallons and imperial UK gallons represent different physical volumes. A US liquid gallon is roughly 3.785 liters, whereas an imperial gallon is about 4.546 liters. Consequently, a vehicle rated in UK MPG shows a numeric figure roughly 20 percent higher than the same vehicle rated in US MPG.
Why does converting zero MPG to Liters per 100 km fail?
Miles per gallon measures distance traveled per volume unit, while liters per 100 kilometers measures fuel volume consumed over distance. Converting between these inverse metrics requires dividing by the input value, which is mathematically undefined when the value is zero.
Which units of fuel economy are supported?
The tool supports US miles per gallon, UK imperial miles per gallon, liters per 100 kilometers, kilometers per liter, and miles per liter.
How many decimal places does the conversion display?
Numeric output values are rounded to 10 decimal places to provide high precision across unit transformations.