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Imperial Gallon to US Gallon Converter
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Imperial Gallon to US Gallon Formula
Conversion explanation: Multiply the value in Imperial Gallon by 1.2009499255 to get the equivalent value in US Gallon.
Popular volume unit conversions
What is Imperial Gallon to US Gallon Converter
This utility converts volume from Imperial gallons (imp gal) to US liquid gallons (US gal). It applies the standard conversion factor where 1 Imperial gallon equals approximately 1.20095 US gallons. For related calculations, you can also check our liter to milliliter conversion tool.
Definitions of Imperial Gallon and US Gallon
What is Imperial Gallon?
An imperial gallon is a unit of liquid volume used in the British imperial system equal to approximately 4.546 liters. It was historically used throughout the British Commonwealth. For related unit metrics, you can use our milliliter to liter conversion tool.
What is US Gallon?
A US gallon is a unit of liquid volume in the United States customary system equal to 231 cubic inches. It is frequently used for fuel and large beverage containers. If you need to make other calculations, see our liter to us gallon conversion tool.
How to Convert Imperial Gallon to US Gallon
To convert a value from imperial gallons to us gallons, multiply the value by the conversion multiplier:
Step-by-Step Example
Suppose you want to convert 5 imperial gallons to us gallons. Using the conversion steps:
- Identify the multiplier factor:
1.2009499255. - Multiply 5 by the factor:
5 × 1.2009499255 = 6.0047496275. - Result: 5 imperial gallons is equal to 6.0047496275 us gallons.
Imperial Gallon to US Gallon Conversion Table
The table below provides quick reference conversions for common values from imperial gallons to us gallons:
| Imperial Gallon [gal (imp)] | US Gallon [gal] |
|---|---|
| 0.01 gal (imp) | 0.0120094993 gal |
| 0.1 gal (imp) | 0.1200949926 gal |
| 1 gal (imp) | 1.2009499255 gal |
| 2 gal (imp) | 2.401899851 gal |
| 3 gal (imp) | 3.6028497765 gal |
| 4 gal (imp) | 4.803799702 gal |
| 5 gal (imp) | 6.0047496275 gal |
| 6 gal (imp) | 7.205699553 gal |
| 7 gal (imp) | 8.4066494785 gal |
| 8 gal (imp) | 9.607599404 gal |
| 9 gal (imp) | 10.8085493295 gal |
| 10 gal (imp) | 12.009499255 gal |
| 20 gal (imp) | 24.0189985101 gal |
| 30 gal (imp) | 36.0284977651 gal |
| 50 gal (imp) | 60.0474962752 gal |
| 100 gal (imp) | 120.0949925505 gal |
| 500 gal (imp) | 600.4749627524 gal |
| 1000 gal (imp) | 1200.9499255049 gal |