1 gal (UK) = 1.2009504914923 gal
1 Imperial gallon (gal (UK)) = 1.2009504914923 US gallon (gal).
If you want to reverse convert, use US gallon → Imperial gallon. 1 gal = 0.83267379220385 gal (UK). You can also explore the full Volume converter page for more cross conversions.
Conversion formula
Imperial gallon to US gallon formula: value in gal = value in gal (UK) × 1.2009504914923.
US gallon to Imperial gallon formula: value in gal (UK) = value in gal × 0.83267379220385.
How to convert Imperial gallon to US gallon
To convert Imperial gallon to US gallon, multiply the value in gal (UK) by 1.2009504914923. This gives the result in gal.
For example, 1 gal (UK) = 1.2009504914923 gal and 10 gal (UK) = 12.009504914923 gal.
What is Imperial gallon?
Imperial gallon (gal (UK)): The imperial gallon. It has a larger volume than the similarly named US gallon. 1 gal (UK) = 4.54609 L.
What is US gallon?
US gallon (gal): The US liquid gallon, used for fuel and large containers. Smaller than the imperial gallon. 1 gal ≈ 3.78541 L.
FAQ
How many us gallon are in 1 imperial gallon?
There are 1.2009504914923 gal in 1 gal (UK).
Why can conversion results differ slightly?
Check the unit definition and rounding. US and imperial measures can differ; rounding intermediate values can also change the final digits.
How do I convert imperial gallon to us gallon?
Multiply the value in gal (UK) by 1.2009504914923 to get the value in gal.
Imperial gallon → other Volume units
- 1 imperial gallon → cubic meter = 0.00454609 cubic meter
- 1 imperial gallon → cubic centimeter = 4546.09 cubic centimeter
- 1 imperial gallon = 4546090 cubic millimeter
- 1 imperial gallon → hectoliter = 0.0454609 hectoliter
- 1 imperial gallon → liter = 4.54609 liter
- 1 imperial gallon → deciliter = 45.4609 deciliter
- 1 imperial gallon → centiliter = 454.609 centiliter
- 1 imperial gallon → milliliter = 4546.09 milliliter
- 1 imperial gallon → cubic feet = 0.16054365319054 cubic feet
- 1 imperial gallon → cubic inch = 277.41943279162 cubic inch
- 1 imperial gallon → cubic yard = 0.0059460612308345 cubic yard
- 1 imperial gallon → us liquid pint = 9.6076090080647 us liquid pint
- 1 imperial gallon → us gallon = 1.2009504914923 us gallon
- 1 imperial gallon → us teaspoon = 922.3335835582 us teaspoon
- 1 imperial gallon → us tablespoon = 307.43829039021 us tablespoon
- 1 imperial gallon → us customary cup = 19.215218016129 us customary cup
- 1 imperial gallon → us liquid quart = 4.803799427909 us liquid quart
- 1 imperial gallon → us fluid ounce = 153.72174412903 us fluid ounce
Imperial gallon → US gallon Table
The table below shows common values from Imperial gallon to US gallon and the reverse direction for quick reference.
| gal (UK) | gal | Rounded |
|---|---|---|
| 1 gal (UK) | 1.2009504914923 gal | 1.2010 |
| 2 gal (UK) | 2.4019009829847 gal | 2.4019 |
| 3 gal (UK) | 3.602851474477 gal | 3.6029 |
| 4 gal (UK) | 4.8038019659693 gal | 4.8038 |
| 5 gal (UK) | 6.0047524574617 gal | 6.0048 |
| 10 gal (UK) | 12.009504914923 gal | 12.0095 |
| 12 gal (UK) | 14.411405897908 gal | 14.4114 |
| 15 gal (UK) | 18.014257372385 gal | 18.0143 |
| 20 gal (UK) | 24.019009829847 gal | 24.0190 |
| 25 gal (UK) | 30.023762287308 gal | 30.0238 |
| 30 gal (UK) | 36.02851474477 gal | 36.0285 |
| 40 gal (UK) | 48.038019659693 gal | 48.0380 |
| 50 gal (UK) | 60.047524574617 gal | 60.0475 |
| 75 gal (UK) | 90.071286861925 gal | 90.0713 |
| 100 gal (UK) | 120.09504914923 gal | 120.0950 |
| 200 gal (UK) | 240.19009829847 gal | 240.1901 |
| 250 gal (UK) | 300.23762287308 gal | 300.2376 |
| 500 gal (UK) | 600.47524574617 gal | 600.4752 |
| 750 gal (UK) | 900.71286861925 gal | 900.7129 |
| 1000 gal (UK) | 1200.9504914923 gal | 1200.9505 |
| 2500 gal (UK) | 3002.3762287308 gal | 3002.3762 |
| 5000 gal (UK) | 6004.7524574617 gal | 6004.7525 |
| 10000 gal (UK) | 12009.504914923 gal | 12009.5049 |
US gallon → Imperial gallon Table
| gal | gal (UK) | Rounded |
|---|---|---|
| 1 gal | 0.83267379220385 gal (UK) | 0.8327 |
| 2 gal | 1.6653475844077 gal (UK) | 1.6653 |
| 3 gal | 2.4980213766115 gal (UK) | 2.4980 |
| 4 gal | 3.3306951688154 gal (UK) | 3.3307 |
| 5 gal | 4.1633689610192 gal (UK) | 4.1634 |
| 10 gal | 8.3267379220385 gal (UK) | 8.3267 |
| 12 gal | 9.9920855064462 gal (UK) | 9.9921 |
| 15 gal | 12.490106883058 gal (UK) | 12.4901 |
| 20 gal | 16.653475844077 gal (UK) | 16.6535 |
| 25 gal | 20.816844805096 gal (UK) | 20.8168 |
| 30 gal | 24.980213766115 gal (UK) | 24.9802 |
| 40 gal | 33.306951688154 gal (UK) | 33.3070 |
| 50 gal | 41.633689610192 gal (UK) | 41.6337 |
| 75 gal | 62.450534415289 gal (UK) | 62.4505 |
| 100 gal | 83.267379220385 gal (UK) | 83.2674 |
| 200 gal | 166.53475844077 gal (UK) | 166.5348 |
| 250 gal | 208.16844805096 gal (UK) | 208.1684 |
| 500 gal | 416.33689610192 gal (UK) | 416.3369 |
| 750 gal | 624.50534415289 gal (UK) | 624.5053 |
| 1000 gal | 832.67379220385 gal (UK) | 832.6738 |
| 2500 gal | 2081.6844805096 gal (UK) | 2081.6845 |
| 5000 gal | 4163.3689610192 gal (UK) | 4163.3690 |
| 10000 gal | 8326.7379220385 gal (UK) | 8326.7379 |
US gallon → Imperial gallon
The reverse value is 1 gal = 0.83267379220385 gal (UK).