Convert imperial gallon to US gallon
1 imp gal = 1.200949926 gal
sig figs
1 imp gal = 1.2 gal
1 imp gal in every volume unit
| cubic millimeter | 4,550,000 mm³ |
| microliter | 4,550,000 μL |
| milliliter | 4,550 mL |
| cubic centimeter | 4,550 cm³ |
| US teaspoon | 922 tsp |
| centiliter | 455 cL |
| US tablespoon | 307 tbsp |
| cubic inch | 277 in³ |
| imperial fluid ounce | 160 imp fl oz |
| US fluid ounce | 154 fl oz |
| deciliter | 45.5 dL |
| US cup | 19.2 cup |
| US pint | 9.61 pt |
| imperial pint | 8 imp pt |
| US quart | 4.8 qt |
| liter | 4.55 L |
| cubic decimeter | 4.55 dm³ |
| imperial quart | 4 imp qt |
| board foot | 1.93 fbm |
| US gallon | 1.2 gal |
| imperial gallon | 1 imp gal |
| cubic foot | 0.161 ft³ |
| US bushel | 0.129 bu |
| hectoliter | 0.0455 hL |
| US beer barrel | 0.0387 bbl beer |
| oil barrel | 0.0286 bbl |
| cubic yard | 0.00595 yd³ |
| cubic meter | 0.00455 m³ |
| kiloliter | 0.00455 kL |
| hundred cubic feet | 0.00161 CCF |
| cord | 0.00125 cord |
| acre-foot | 0.00000369 ac·ft |
| million US gallons | 0.0000012 MG |
| cubic kilometer | 4.55e-12 km³ |
How the conversion works
Multiply by 1.200949926 to go from imperial gallon to US gallon, or divide by it to go back. Every conversion on this site routes through the SI value (m³) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? US gallon to imperial gallon: 1 gal = 0.8326741846 imp gal.
imperial gallon to US gallon: common values
| 1 imp gal | 1.2009499 gal |
| 2 imp gal | 2.4018999 gal |
| 3 imp gal | 3.6028498 gal |
| 5 imp gal | 6.0047496 gal |
| 10 imp gal | 12.009499 gal |
| 15 imp gal | 18.014249 gal |
| 20 imp gal | 24.018999 gal |
| 25 imp gal | 30.023748 gal |
| 50 imp gal | 60.047496 gal |
| 75 imp gal | 90.071244 gal |
| 100 imp gal | 120.09499 gal |
| 250 imp gal | 300.23748 gal |
| 500 imp gal | 600.47496 gal |
| 1000 imp gal | 1,200.9499 gal |
Other volume conversions
mL → galL → galm³ → galimp gal → mLimp gal → Limp gal → m³imp gal → qtimp gal → pt