Liter to Gallon (UK) Converter

Accurate conversion between liters (L) and UK imperial gallons (gal). Ideal for fuel calculations, brewing, cooking, and liquid measurements.

1 UK gallon = 4.54609 liters | Default precision: 4 decimal places

Conversion Factor

1 UK gallon = 4.54609 liters (exact)

L
gal (UK)

Precision: 4 Decimal Places | Formula: gal (UK) = L ÷ 4.54609

Common Volumes

Liters and UK Gallons

Understanding these volume units and their practical applications.

The Conversion Formula

1 UK gallon = 4.54609 liters

UK gal = L ÷ 4.54609
L = UK gal × 4.54609

Example Calculation:

Convert 20 liters to UK gallons:

UK gal = L ÷ 4.54609

UK gal = 20 L ÷ 4.54609

UK gal = 4.3993888...

UK gal = 4.3994 (with 4 decimal places)

This conversion is commonly used for fuel calculations, beverage measurements, and other liquid volume applications in the UK and other countries using imperial units.

When to Use This Conversion:

  • Fuel efficiency calculations in the UK (mpg - miles per gallon)
  • Beverage measurements (beer, wine, spirits) in imperial markets
  • Cooking and baking with UK recipes
  • Agricultural and industrial liquid measurements
  • Water usage calculations in countries using imperial units

About the Units

Liter (L)

A metric unit of volume equal to 1 cubic decimeter (dm³) or 1000 cubic centimeters (cm³). It is the most widely used unit for liquid volume in the metric system.

Common uses:

  • Fuel quantities in most countries
  • Beverage bottle sizes
  • Cooking measurements in metric recipes
  • Chemical and liquid volumes in science

UK Gallon (gal)

An imperial unit of volume defined as exactly 4.54609 liters. It is legally defined as the volume of 10 pounds of water at 62°F (16.67°C).

Common uses:

  • Fuel measurements in the UK
  • Beer and wine cask sizes
  • Some agricultural liquid measurements
  • Traditional cooking recipes in the UK

Volume Unit Equivalents:

1 UK Gallon Equals: 1 Liter Equals:
4.54609 liters 0.219969 UK gallons
8 pints (UK) 1.75975 pints (UK)
4 quarts (UK) 0.879877 quarts (UK)
1.20095 US gallons 0.264172 US gallons
160 fluid ounces (UK) 35.1951 fluid ounces (UK)

Frequently Asked Questions

Common questions about liters, UK gallons, and their conversion.

One UK gallon (imperial gallon) is exactly equal to 4.54609 liters. This is a standardized conversion factor used in the United Kingdom and other countries that utilize imperial units for liquid measurements.

1 UK gallon = 4.54609 liters

This conversion factor was established by the Weights and Measures Act of 1985 in the UK, which defined the imperial gallon based on the metric system.

UK gallons (imperial gallons) and US gallons are different units of measurement:

  • UK gallon: Equals 4.54609 liters
  • US liquid gallon: Equals approximately 3.78541 liters
  • This means a UK gallon is about 20% larger than a US gallon

The difference originated from different definitions of the gallon's relationship to the volume of water. This distinction is important when converting between systems, especially for fuel and liquid measurements.

The UK gallon (imperial gallon) is primarily used in:

  • United Kingdom
  • Canada (though Canada has largely adopted the metric system)
  • Some Caribbean countries
  • British Overseas Territories

It's important to note that even in these countries, the metric system (liters) is often used alongside imperial units, especially in official and scientific contexts. Fuel efficiency is still commonly measured in miles per imperial gallon (mpg) in the UK.

Precise conversion between liters and UK gallons is important in several contexts:

  • Fuel purchases and budgeting: Accurately comparing prices when traveling between countries using different units
  • Fuel efficiency calculations: Correctly determining miles per gallon (mpg) for vehicles in the UK
  • Import/export transactions: Ensuring accurate volume measurements for trade
  • Cooking and brewing: Following recipes with precision, especially for large batches
  • Chemical and pharmaceutical industries: Maintaining accurate liquid measurements for safety and efficacy

Even small conversion errors can lead to significant discrepancies when dealing with large volumes.

To convert between UK gallons and US gallons, use these conversion factors:

1 UK gallon = 1.20095 US gallons

1 US gallon = 0.832674 UK gallons

Example conversion:

5 UK gallons to US gallons:

5 × 1.20095 = 6.00475 US gallons

This conversion is particularly important for international travel, importing/exporting liquid products, and comparing fuel efficiency ratings between countries.

Conversion Table: Liters to UK Gallons

Common conversions with 4 decimal places precision.

Liters (L) UK Gallons (gal) Common Application
1 0.21997 Small beverage bottle
4.54609 1.00000 1 UK gallon (exact)
10 2.19969 Small fuel can
20 4.39939 Jerry can volume
50 10.99848 Beverage keg
100 21.99695 Water storage
454.609 100.00000 100 UK gallons (exact)
500 109.98476 Industrial drum

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