What is the difference between gallon (UK) and gallon (US)?

The gallon (UK) is defined as exactly 4.54609 liters, whereas the gallon (US) equals exactly 3.785411784 liters, making the UK gallon larger than the US gallon.

Why is it important to convert between gallon (UK) and gallon (US)?

Converting between these units ensures accurate understanding and comparison of volumes when dealing with fuel, beverages, industrial fluids, or historical data across different regions.

Can I use the conversion rate for converting other volume units?

No, the conversion rate is specific to gallon (UK) to gallon (US) and should not be applied to other volume units.

How to Convert from Gallon (UK) to Gallon (US)

Learn how to convert volume measurements from gallon (UK) to gallon (US) with this easy-to-use online unit converter. Understand the differences and applications of both gallon units.

Gallon (UK) [gal (UK)]

Gallon (US) [gal (US)]

Please check your input. It must be a valid numeric value.

Gallon (UK) [gal (UK)] to Gallon (US) [gal (US)] Conversion Table

Gallon (UK) [gal (UK)]	Gallon (US) [gal (US)]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Gallon (UK) [gal (UK)] to Gallon (US) [gal (US)] Conversion Table
Gallon (UK) [gal (UK)]	Gallon (US) [gal (US)]

Explore More Volume Units Converter

What Is This Tool?

This tool allows users to convert volume values from the imperial gallon (UK) to the US gallon. It is designed for accurate interpretation and comparison of liquid volumes measured in different regional units.

How to Use This Tool?

Enter the volume value in gallon (UK)
Select the from unit as gallon (UK) and to unit as gallon (US)
Click the convert button to see the equivalent volume in gallon (US)
Review the result and use it for your specific application needs

Key Features

Converts gallon (UK) to gallon (US) using the exact conversion rate
Supports volume measurements relevant to fuels, beverages, and industrial liquids
Browser-based and easy to use without installations
Provides clear examples to demonstrate the conversion process

Examples

Convert 2 gallon (UK) to gallon (US): 2 × 1.2009499255 = 2.401899851 gallon (US)
Convert 5 gallon (UK) to gallon (US): 5 × 1.2009499255 = 6.0047496275 gallon (US)

Common Use Cases

Comparing fuel volumes between regions using imperial and US customary units
Interpreting marine bunkering volume data reported in different gallon standards
Converting historical beverage container volumes for regulatory or archival purposes
Supporting engineering and HVAC calculations involving fluid flow rates

Tips & Best Practices

Always confirm which gallon unit your source data uses before converting
Use this conversion for accurate regional comparisons rather than direct numerical values
Be mindful of conversion effects when working with large volume quantities
Apply the conversion rate consistently for bulk or industrial calculations

Limitations

Volume standards differ regionally, so direct numerical comparison without conversion may cause errors
Rounding may slightly affect precision in practical scenarios
Small discrepancies can accumulate when converting very large volumes

Frequently Asked Questions

What is the difference between gallon (UK) and gallon (US)?: The gallon (UK) is defined as exactly 4.54609 liters, whereas the gallon (US) equals exactly 3.785411784 liters, making the UK gallon larger than the US gallon.
Why is it important to convert between gallon (UK) and gallon (US)?: Converting between these units ensures accurate understanding and comparison of volumes when dealing with fuel, beverages, industrial fluids, or historical data across different regions.
Can I use the conversion rate for converting other volume units?: No, the conversion rate is specific to gallon (UK) to gallon (US) and should not be applied to other volume units.

Key Terminology

Gallon (UK): An imperial unit of volume defined as exactly 4.54609 liters, commonly used in regions employing imperial measurements.
Gallon (US): A US customary unit of volume equal to 231 cubic inches or exactly 3.785411784 liters, used mainly in the United States.
Conversion Rate: The numerical factor used to convert a value in gallon (UK) to its equivalent in gallon (US), specifically 1.2009499255.

Quick Knowledge Check

What volume in gallon (US) is equivalent to 1 gallon (UK)?

Exactly 3.785 liters

Approximately 1.20095 gallons (US)

About 4.546 liters

Which application typically uses gallon (UK)?

Packaging and labeling milk in the US

Marine bunkering volumes in imperial unit regions

Measuring motor fuel in the US

Why must you convert between gallon (UK) and gallon (US)?

To ensure accurate volume comparison across regions

Because both gallons represent the same volume

To convert between liquid and solid measures

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