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Miles per Gallon (UK) to Liters per 100 Kilometers Conversion Calculator: Free Online Tool

Convert miles per UK gallon to liters per 100 kilometers with our free online fuel consumption converter.

Miles per Gallon (UK) to Liters per 100 Kilometers Calculator

Miles per Gallon (UK)
Liters per 100 Kilometers

How to Use the Calculator:

  1. Enter the value you want to convert in the 'From' field (Miles per Gallon (UK)).
  2. The converted value in Liters per 100 Kilometers will appear automatically in the 'To' field.
  3. Use the dropdown menus to select different units within the Fuel Consumption category.
  4. Click the swap button (⇌) to reverse the conversion direction.

How to Convert Miles per Gallon (UK) to Liters per 100 Kilometers

Converting Miles per Gallon (UK) to Liters per 100 Kilometers involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

L/100km = 282.481 / MPG (UK)

Example Calculation:

Convert 30 miles per UK gallon: 282.481 / 30 = 9.41603 liters per 100 kilometers

Disclaimer: For Reference Only

These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.

Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.

What is a Miles per Gallon (UK) and a Liters per 100 Kilometers?

Miles per Gallon (UK), often abbreviated as MPG (UK) or simply MPG in the UK context, is a unit of fuel efficiency used primarily within the Imperial system. It quantifies the distance in miles that a vehicle can travel using one Imperial gallon of fuel. A higher MPG (UK) value indicates better fuel efficiency.

Liters per 100 Kilometers (L/100km) is a unit of fuel consumption commonly used in the metric system. It measures the volume of fuel (in liters) required for a vehicle to travel a distance of 100 kilometers. Unlike units like MPG or km/L, a lower value indicates better fuel efficiency.

Note: The Miles per Gallon (UK) is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Liters per 100 Kilometers belongs to the metric (SI) system.

History of the Miles per Gallon (UK) and Liters per 100 Kilometers

The Imperial gallon was defined in the UK Weights and Measures Act of 1824 and became the standard measure for liquids. Consequently, MPG based on this gallon became the traditional measure of vehicle fuel efficiency in the United Kingdom and several Commonwealth countries. While the metric unit L/100km is now also used officially (especially for new car regulations and comparisons), MPG (UK) remains deeply ingrained in public understanding and is widely used by consumers and in the media.

The L/100km unit gained prominence alongside the adoption of the metric system in many parts of the world, particularly Europe, Canada, Australia, New Zealand, and parts of Asia and South America. It was chosen as a standard measure because it directly quantifies fuel consumption over a fixed, standard distance (100 km), which is often preferred for regulatory and comparative purposes over distance-per-unit-volume measures like km/L or MPG. Its adoption reflects a focus on the amount of resource used rather than the distance achieved per unit of resource.

Common Uses for miles per UK gallon and liters per 100 kilometers

Explore the typical applications for both Miles per Gallon (UK) (imperial/US) and Liters per 100 Kilometers (metric) to understand their common contexts.

Common Uses for miles per UK gallon

  • Consumer Vehicle Choice (UK): A primary factor for UK consumers when comparing the running costs and environmental impact of different vehicles.
  • Manufacturer Advertising (UK): Often highlighted in car advertisements and brochures targeting the UK market.
  • Used Car Sales (UK): Frequently quoted figure when evaluating and selling pre-owned vehicles.
  • Fuel Cost Estimation: Used by drivers to estimate fuel consumption and costs for journeys.
  • Informal Benchmarking: Common unit used in everyday conversation about car performance in the UK.

Common Uses for liters per 100 kilometers

  • Official Vehicle Ratings: Standard unit for reporting fuel consumption figures by manufacturers and government agencies in many metric countries.
  • Vehicle Labeling: Displayed on mandatory fuel economy labels on new cars in regions like the EU, Canada, and Australia.
  • Consumer Comparison: Used by consumers to compare the fuel usage of different vehicles (remembering lower is better).
  • Fleet Management: Helps businesses track and manage fuel costs for vehicle fleets.
  • Environmental Reporting: Used in calculating vehicle emissions based on fuel consumed.

Frequently Asked Questions

Questions About Miles per Gallon (UK) (MPG (UK))

How is MPG (UK) different from MPG (US)?

The core difference is the gallon size. The Imperial gallon (UK) is larger than the US customary gallon (approximately 4.546 liters vs. 3.785 liters). Because a vehicle travels the same distance but the UK gallon contains more fuel, the MPG (UK) figure for a given vehicle will always be higher than its MPG (US) figure. Specifically, 1 MPG (UK) ≈ 1.201 MPG (US).

Is a higher MPG (UK) value better?

Yes, a higher MPG (UK) value signifies better fuel efficiency. It means the vehicle can cover more miles for each Imperial gallon of fuel consumed.

How do I convert MPG (UK) to L/100km?

To convert Imperial Miles Per Gallon to Liters per 100 kilometers, use the formula: L/100km ≈ 282.48 / MPG (UK). Note that unlike MPG, a lower L/100km value indicates better fuel efficiency.

How do I convert MPG (UK) to MPG (US)?

To convert Imperial Miles Per Gallon to US Miles Per Gallon, use the formula: MPG (US) ≈ MPG (UK) * 0.83267.

How do I convert MPG (UK) to km/L?

To convert Imperial Miles Per Gallon to Kilometers per Liter, use the formula: km/L ≈ MPG (UK) * 0.3540. Like MPG, a higher km/L value indicates better fuel efficiency.

About Liters per 100 Kilometers (L/100km)

Is a lower L/100km value better?

Yes, a lower L/100km value indicates better fuel efficiency. It means the vehicle consumes less fuel to travel the same 100 kilometers.

How do I convert L/100km to km/L?

To convert Liters per 100 kilometers (L/100km) to Kilometers per Liter (km/L), divide 100 by the L/100km value: km/L = 100 / (L/100km). Note that km/L measures efficiency directly (higher is better).

How do I convert L/100km to MPG (US)?

To convert L/100km to US Miles Per Gallon (MPG), divide 235.21 by the L/100km value: MPG (US) ≈ 235.21 / (L/100km).

How do I convert L/100km to MPG (Imperial)?

To convert L/100km to Imperial Miles Per Gallon (MPG), used mainly in the UK, divide 282.48 by the L/100km value: MPG (Imperial) ≈ 282.48 / (L/100km).

Conversion Table: Miles per Gallon (UK) to Liters per 100 Kilometers

Miles per Gallon (UK) (MPG (UK))Liters per 100 Kilometers (L/100km)
1282.481
556.496
1028.248
2511.299
505.65
1002.825
5000.565
1,0000.283

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