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Kilometers per Gallon (US) to Kilometers per Gallon (UK) Conversion Calculator: Free Online Tool

Convert kilometers per US gallon to kilometers per UK gallon with our free online fuel consumption converter.

Kilometers per Gallon (US) to Kilometers per Gallon (UK) Calculator

Kilometers per Gallon (US)
Kilometers per Gallon (UK)

How to Use the Calculator:

  1. Enter the value you want to convert in the 'From' field (Kilometers per Gallon (US)).
  2. The converted value in Kilometers per Gallon (UK) 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 Kilometers per Gallon (US) to Kilometers per Gallon (UK)

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

Formula:

1 Kilometers per Gallon (US) = 0.832674 kilometers per UK gallon

Example Calculation:

Convert 30 kilometers per US gallon: 30 × 0.832674 = 24.9802 kilometers per UK gallon

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 Kilometers per Gallon (US) and a Kilometers per Gallon (UK)?

Kilometers per Gallon (US), often abbreviated as km/gal (US), is a unit of fuel efficiency. It measures the distance in kilometers (km) that a vehicle can travel using one US liquid gallon (US gal) of fuel. It combines a metric unit of distance with a US customary unit of volume.

Kilometers per Gallon (UK), often abbreviated as km/gal (UK), is a unit of fuel efficiency. It measures the distance in kilometers (km) that a vehicle can travel using one Imperial gallon (UK gal) of fuel. It combines a metric unit of distance with an Imperial unit of volume.

Note: The Kilometers per Gallon (US) is part of the metric (SI) system, primarily used globally in science and trade. The Kilometers per Gallon (UK) belongs to the metric (SI) system.

History of the Kilometers per Gallon (US) and Kilometers per Gallon (UK)

This unit is not a standard international or US unit for fuel consumption. Its use typically arises in specific, often informal, contexts where metric distances (kilometers) need to be related to fuel volumes measured in US gallons. This might occur when comparing vehicle specifications or fuel data between regions using different systems (e.g., comparing a European car's potential range using US fuel measurements) or during transitions between measurement systems.

This unit is not a standard international unit for fuel consumption. Its use typically arises in specific contexts where metric distances (kilometers) need to be related to fuel volumes measured in Imperial gallons, which are still sometimes used in the UK and some Commonwealth countries, although less frequently for official fuel efficiency ratings today. It might appear when comparing vehicle specifications or fuel data across regions that use different systems or during transitions between measurement systems.

Common Uses for kilometers per US gallon and kilometers per UK gallon

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

Common Uses for kilometers per US gallon

Kilometers per Gallon (US) is rarely used in official vehicle specifications, regulations, or everyday conversation, especially within the United States where Miles per Gallon (US MPG) is the standard. Globally, Liters per 100 kilometers (L/100km) or Kilometers per Liter (km/L) are more common metric standards. Its primary use might be in specific technical calculations, data conversions, or informal comparisons involving US fuel volumes alongside metric distances.

Common Uses for kilometers per UK gallon

Kilometers per Gallon (UK) is rarely used in official vehicle specifications or everyday conversation. Standard units like Liters per 100 kilometers (L/100km), Miles per Gallon (UK MPG), or Kilometers per Liter (km/L) are far more common globally and within the UK itself. Its primary use might be in specific technical calculations, data conversions, or comparisons involving older data or equipment specified using Imperial gallons alongside metric distances.

Frequently Asked Questions

Questions About Kilometers per Gallon (US) (km/gal (US))

Why is km/gal (US) not commonly used?

The United States primarily uses Miles per Gallon (US MPG) for vehicle fuel efficiency. Most other countries using the metric system prefer Kilometers per Liter (km/L) or Liters per 100 Kilometers (L/100km). Hybrid units like km/gal (US) mix systems and are generally avoided in official standards to prevent confusion.

How does km/gal (US) differ from km/gal (UK)?

The key difference is the gallon size. The US liquid gallon is smaller than the Imperial (UK) gallon (1 US gallon ≈ 3.785 liters, while 1 UK gallon ≈ 4.546 liters). Therefore, for the same actual fuel efficiency, a vehicle's rating in km/gal (US) will be numerically higher than its rating in km/gal (UK) because it travels the same distance using a smaller gallon measure.

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

Divide the value in km/gal (US) by the exact number of liters in a US gallon: km/L = km/gal (US) / 3.785411784.

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

Divide the value in km/gal (US) by the exact number of kilometers in a mile: MPG (US) = km/gal (US) / 1.609344.

How do I convert km/gal (US) to the common L/100km format?

Use the inverse relationship formula: L/100km = 378.5411784 / km/gal (US). A higher km/gal (US) value corresponds to a lower L/100km value (indicating better fuel economy).

About Kilometers per Gallon (UK) (km/gal (UK))

Why is km/gal (UK) not commonly used?

Most countries and automotive manufacturers globally have standardized on either fully metric units (like km/L or L/100km) or, in specific regions like the US, customary units (MPG US). The UK predominantly uses MPG (UK) and increasingly L/100km. Hybrid units like km/gal (UK) introduce complexity and are generally avoided in official ratings and common usage to prevent confusion.

How does km/gal (UK) differ from km/gal (US)?

The key difference is the gallon size. The Imperial (UK) gallon is approximately 20% larger than the US gallon (1 UK gallon ≈ 4.546 liters, while 1 US gallon ≈ 3.785 liters). Therefore, for the same actual fuel efficiency, a vehicle's rating in km/gal (UK) will be numerically lower than its rating in km/gal (US) because it travels the same distance using a larger gallon measure.

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

Divide the value in km/gal (UK) by the exact number of liters in an Imperial gallon: km/L = km/gal (UK) / 4.54609.

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

Divide the value in km/gal (UK) by the exact number of kilometers in a mile: MPG (UK) = km/gal (UK) / 1.609344.

How do I convert km/gal (UK) to the common L/100km format?

Use the inverse relationship formula: L/100km = 454.609 / km/gal (UK). A higher km/gal (UK) value corresponds to a lower L/100km value (better fuel economy).

Conversion Table: Kilometers per Gallon (US) to Kilometers per Gallon (UK)

Kilometers per Gallon (US) (km/gal (US))Kilometers per Gallon (UK) (km/gal (UK))
11.201
56.005
1012.01
2530.024
5060.048
100120.095
500600.475
1,0001,200.95

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