Imperial Gallons to US Liquid Quarts Converter
Convert Imperial gallons to US liquid quarts instantly with this free Imperial gallons to US liquid quarts converter. Enter any value to get an accurate volume conversion, plus the formula, the conversion factor and a full reference table.
What is 1 Imperial gallon in US liquid quarts?
1 Imperial gallon is equal to 4.8037997 US liquid quarts.
1 × 4.8037997 = 4.8037997 US liquid quarts
1 Imperial gallon = 4.803799702 US liquid quarts
Imperial gallons to US liquid quarts formula
qt = imp gal × 4.8037997
The Imperial gallons to US liquid quarts conversion factor is 4.80379970202, which is exact by definition. 1 Imperial gallon = 4.80379970202 US liquid quarts, and 1 US liquid quart = 0.208168546157 Imperial gallons.
Regional note. Gallons differ by region. A US liquid gallon is exactly 3.785411784 liters; an Imperial (UK) gallon is exactly 4.54609 liters — about 20% larger. This page uses the Imperial gallon.
Worked examples
- 2 Imperial gallons = 9.6075994 US liquid quarts — 2 × 4.8037997 = 9.6075994 US liquid quarts
- 6 Imperial gallons = 28.8227982 US liquid quarts — 6 × 4.8037997 = 28.8227982 US liquid quarts
- 10 Imperial gallons = 48.037997 US liquid quarts — 10 × 4.8037997 = 48.037997 US liquid quarts
Imperial gallons to US liquid quarts conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Imperial gallons (imp gal) | US liquid quarts (qt) |
|---|---|
| 1 imp gal | 4.8037997 qt |
| 2 imp gal | 9.6075994 qt |
| 3 imp gal | 14.411399 qt |
| 4 imp gal | 19.215199 qt |
| 5 imp gal | 24.018999 qt |
| 6 imp gal | 28.822798 qt |
| 7 imp gal | 33.626598 qt |
| 8 imp gal | 38.430398 qt |
| 9 imp gal | 43.234197 qt |
| 10 imp gal | 48.037997 qt |
| 12 imp gal | 57.645596 qt |
| 15 imp gal | 72.056996 qt |
| 20 imp gal | 96.075994 qt |
| 25 imp gal | 120.09499 qt |
| 30 imp gal | 144.11399 qt |
| 50 imp gal | 240.18999 qt |
| 75 imp gal | 360.28498 qt |
| 100 imp gal | 480.37997 qt |
| 500 imp gal | 2,401.8999 qt |
| 1,000 imp gal | 4,803.7997 qt |
When you need to convert Imperial gallons to US liquid quarts
- Scaling recipes between metric millilitres and US cups, pints or fluid ounces.
- Comparing fuel prices and tank capacities between countries.
- Working out paint, fertiliser or pool chemical quantities from instructions written for another market.
Getting a feel for the scale
A converted number is easier to trust when you can picture it. These reference points let you sanity-check the result at a glance.
Imperial gallon (imp gal)
- An Imperial gallon is about 1.2 US gallons
- UK fuel prices are quoted per litre, not per gallon
Common mistakes to avoid
- Dividing when you should multiply. Because 1 Imperial gallon = 4.8038 US liquid quarts, the answer should be larger than the number you started with.
- Mixing US and Imperial liquid measures. The Imperial gallon and pint are about 20% larger than their US counterparts, which is enough to ruin a recipe or misstate fuel economy.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
Cooking tolerates rounding to the nearest 5 mL or quarter cup. Dosing, chemistry and pool treatment do not — keep the full converted value there.
How these units are defined
- Imperial gallon (imp gal): Exactly 4.54609 liters — the gallon used in the UK and historically in Canada. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- US liquid quart (qt): Two US pints, about 946 mL. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
- US liquid quarts to Imperial gallons
- Imperial gallons to Milliliters
- Imperial gallons to Liters
- Imperial gallons to Cubic meters
- Imperial gallons to Cubic feet
- Imperial gallons to US teaspoons
- Imperial gallons to US tablespoons
- Imperial gallons to US fluid ounces
- Imperial gallons to US cups
- Imperial gallons to US liquid pints
- Imperial gallons to US liquid gallons
- Imperial gallons to Imperial pints
Frequently asked questions
- What is 1 Imperial gallon in US liquid quarts?
- 1 Imperial gallon is equal to 4.8037997 US liquid quarts.
- How many Imperial gallons are in one US liquid quart?
- There are 0.208168546 Imperial gallons in 1 US liquid quart.
- How do you convert Imperial gallons to US liquid quarts?
- Multiply the number of Imperial gallons by 4.8037997 — or use the formula qt = imp gal × 4.8037997.
- What is 6 Imperial gallons in US liquid quarts?
- 6 Imperial gallons is 28.8227982 US liquid quarts. 6 × 4.8037997 = 28.8227982 US liquid quarts.
- Is the Imperial gallons to US liquid quarts conversion exact?
- Yes. The relationship is fixed by definition, so 4.80379970202 is an exact conversion factor — only the displayed result is rounded.
- Does this use US or Imperial US liquid quarts?
- Gallons differ by region. A US liquid gallon is exactly 3.785411784 liters; an Imperial (UK) gallon is exactly 4.54609 liters — about 20% larger. This page uses the Imperial gallon.