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Convert US Gallon to Imperial Gallon

This US gallon to imperial gallon conversion tool helps you convert US gallons to imperial gallons instantly. It's fast, reliable, and user-friendly, perfect for international measurements, fuel calculations, or educational use.

How to Convert Us gallon to Imperial gallon

To convert US gallons to imperial gallons, divide the number of US gallons by 1.20095, as one US gallon equals approximately 0.832674 imperial gallons.

Conversion Formula:

value / 1.20095

Understanding the Conversion

When converting us gallon to imperial gallon, you're working with volume units where one us gallon equals approximately 0.832674 imperial gallon units. To make this conversion, divide the number of us gallon by 1.20095.

This type of conversion is helpful when you need to express larger volume values in smaller units. The relationship between us gallon and imperial gallon is based on standard volume conversion conventions, making this conversion consistent across different applications.

Conversion Examples

Example: Convert 6 us gallon to imperial gallon

  1. Step 1: Identify the conversion factor. Since 1 us gallon = 0.832674 imperial gallon, you divide by 1.20095.
  2. Step 2: Divide 6 us gallon by 1.20095.
  3. Step 3: 6 ÷ 1.20095 = 4.9960 imperial gallon

6 us gallon = 4.996044797868354 imperial gallon

This shows the basic conversion process using a whole number.

Example: Convert 20 us gallon to imperial gallon

  1. Step 1: Conversion factor: divide by 1.20095.
  2. Step 2: 20 us gallon ÷ 1.20095
  3. Step 3: Result = 16.6535 imperial gallon

20 us gallon = 16.65348265956118 imperial gallon

This demonstrates the conversion with a larger value.

Conversion Formula

The formula to convert us gallon to imperial gallon is:

us gallon ÷ 1.20095 = imperial gallon

Or equivalently:


us gallon ÷ 1.20095 = imperial gallon

Dividing by 1.20095 gives you the equivalent value in imperial gallon.

Conversion Chart

Us gallonImperial gallon
10.8327
21.6653
32.498
43.3307
54.1634
64.996
75.8287
86.6614
97.4941
108.3267
1512.4901
2016.6535
3024.9802
6049.9604
10083.2674

Quick Conversion Tip

Quick conversion: Divide us gallon by 1.20095 to get imperial gallon. For example, 1.20095 us gallon = 1 imperial gallon, 2.4019 us gallon = 2 imperial gallon.

Unit Definitions

US Gallon (gal)

A US gallon is the standard gallon used in the United States for liquids such as gasoline, milk, and water.

1 US gallon = 3.78541 liters = 231 cubic inches = 16 US cups

Imperial Gallon (imp gal)

An imperial gallon is a UK unit of volume historically used for fuel and beverages, larger than the US gallon.

1 imperial gallon = 4.54609 liters ≈ 1.20095 US gallons = 160 imperial fluid ounces

Common Use Cases

  • Engineering: Convert us gallon to imperial gallon when working on projects with specific volume requirements
  • Calculations: Convert us gallon to imperial gallon when working with volume measurements in different units
  • Measurements: Convert us gallon to imperial gallon to express volume values in more convenient units
  • Education: Transform us gallon to imperial gallon for volume calculations in studies and assignments
  • Manufacturing: Convert us gallon to imperial gallon for volume specifications in production processes
  • Business: Convert us gallon to imperial gallon for volume calculations in business and commerce
  • Scientific work: Use us gallon to imperial gallon conversion in experiments requiring precise volume measurements