US Gallons to UK Quarts (gal to imp qt) Converter
1 US gallon (gal) = 3.3307 UK quarts (imp qt). To convert US gallons to UK quarts, multiply by 3.3307: 15 gal × 3.3307 = 49.9605 imp qt.
Quick facts
- 1 gal = 3.3307 imp qt
- 1 imp qt = 0.300237 gal
- Formula: imp qt = gal × 3.3307
- Quick estimate: multiply by about 3.3
How to convert US gallons to UK quarts
- Start with your measurement in US gallons.
- Multiply it by 3.3307 (the number of UK quarts in one US gallon).
- Round the result to the precision you need.
Worked example (a car fuel tank): 15 gal × 3.3307 = 49.9605 imp qt.
To convert UK quarts back to US gallons, multiply by 0.300237, or divide by 3.3307.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
US Gallons to UK Quarts conversion table
| US Gallons [gal] | UK Quarts [imp qt] |
|---|---|
| 0.01 gal | 0.0333069674 imp qt |
| 0.1 gal | 0.3330696739 imp qt |
| 1 gal | 3.3306967385 imp qt |
| 2 gal | 6.661393477 imp qt |
| 3 gal | 9.9920902155 imp qt |
| 5 gal | 16.6534836926 imp qt |
| 10 gal | 33.3069673852 imp qt |
| 20 gal | 66.6139347703 imp qt |
| 50 gal | 166.5348369258 imp qt |
| 100 gal | 333.0696738516 imp qt |
| 1000 gal | 3330.696738516 imp qt |
gal to imp qt chart from 1 to 100
- 1 gal 3.3307 imp qt
- 2 gal 6.66139 imp qt
- 3 gal 9.99209 imp qt
- 4 gal 13.3228 imp qt
- 5 gal 16.6535 imp qt
- 6 gal 19.9842 imp qt
- 7 gal 23.3149 imp qt
- 8 gal 26.6456 imp qt
- 9 gal 29.9763 imp qt
- 10 gal 33.307 imp qt
- 11 gal 36.6377 imp qt
- 12 gal 39.9684 imp qt
- 13 gal 43.2991 imp qt
- 14 gal 46.6298 imp qt
- 15 gal 49.9605 imp qt
- 16 gal 53.2911 imp qt
- 17 gal 56.6218 imp qt
- 18 gal 59.9525 imp qt
- 19 gal 63.2832 imp qt
- 20 gal 66.6139 imp qt
- 25 gal 83.2674 imp qt
- 30 gal 99.9209 imp qt
- 35 gal 116.574 imp qt
- 40 gal 133.228 imp qt
- 45 gal 149.881 imp qt
- 50 gal 166.535 imp qt
- 55 gal 183.188 imp qt
- 60 gal 199.842 imp qt
- 65 gal 216.495 imp qt
- 70 gal 233.149 imp qt
- 75 gal 249.802 imp qt
- 80 gal 266.456 imp qt
- 85 gal 283.109 imp qt
- 90 gal 299.763 imp qt
- 95 gal 316.416 imp qt
- 100 gal 333.07 imp qt
UK Quarts to US Gallons conversion table
| UK Quarts [imp qt] | US Gallons [gal] |
|---|---|
| 0.01 imp qt | 0.0030023748 gal |
| 0.1 imp qt | 0.0300237481 gal |
| 1 imp qt | 0.3002374814 gal |
| 2 imp qt | 0.6004749628 gal |
| 3 imp qt | 0.9007124441 gal |
| 5 imp qt | 1.5011874069 gal |
| 10 imp qt | 3.0023748138 gal |
| 20 imp qt | 6.0047496275 gal |
| 50 imp qt | 15.0118740688 gal |
| 100 imp qt | 30.0237481376 gal |
| 1000 imp qt | 300.2374813762 gal |
US Gallons vs UK Quarts
| US Gallon | UK Quart | |
|---|---|---|
| Symbol | gal | imp qt |
| Equals | 1 gal = 3.3307 imp qt | 1 imp qt = 0.300237 gal |
What is a US gallon?
A US customary unit equal to 4 quarts. Used in the US for fuel, milk, and paint.
What is a UK quart?
A UK imperial unit equal to 2 imperial pints. Found in older UK and Canadian recipes and measuring jugs.
When You Need to Convert US Gallons to UK Quarts
US gallons are used mainly in the United States, while UK quarts are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes. This conversion bridges the US customary and metric systems, so it comes up whenever a figure crosses the US border with Canada or the Atlantic with the UK: product specifications, travel, recipes, school work and trade.
How big is 1 gal compared with 1 imp qt?
1 gal is 3.3307 times the size of 1 imp qt, so the number gets bigger when you convert US gallons to UK quarts.
US Gallons to UK Quarts without a calculator
- In your head: multiply by 3 (about 9.9% off). 50 gal × 3 ≈ 150 imp qt.
- Closer estimate: multiply by 3.3 (within 0.92%).
- Fraction trick: multiply by 10, then divide by 3 (within 0.079%).
Real-world gal to imp qt examples
| Example | US Gallons | UK Quarts |
|---|---|---|
| A car fuel tank | 15 gal | 49.9605 imp qt |
| A gallon of milk | 1 gal | 3.3307 imp qt |
| A hot-water heater | 50 gal | 166.535 imp qt |
| An older recipe measure | 0.300237 gal | 1 imp qt |
| Half an imperial gallon | 0.600475 gal | 2 imp qt |
How exact is the gal to imp qt factor?
The factor is exact by definition, so any error comes only from rounding. For everyday use, 3 significant figures are plenty; for engineering or invoices, keep 5 or more.
Mistakes to avoid
- US and imperial (UK) measures share names but not sizes. Check which one a recipe, label or fuel figure uses before converting.
Background on US gallons and UK quarts
The US gallon is the old English wine gallon of exactly 231 cubic inches.
Related conversions
Next, you might want uk gallons to uk quarts, us gallons to us quarts, uk quarts to liters and us gallons to liters. The full volume converter lists every unit.
On pakmath.com, the scientific calculator is a useful next step; our sister site Adzita has a fuel cost calculator.
Frequently asked questions
How many UK quarts are in a US gallon?
There are 3.3307 UK quarts in 1 US gallon (1 gal = 3.3306967385 imp qt).
How many US gallons are in a UK quart?
There are 0.300237 US gallons in 1 UK quart (1 imp qt = 0.3002374814 gal).
How do I convert US gallons to UK quarts?
Multiply by 3.3307, or divide by 0.300237 if that is easier. Example: 10 gal = 33.307 imp qt.
What is 10 gal in UK quarts?
10 gal = 33.307 imp qt.
What is 100 gal in UK quarts?
100 gal = 333.07 imp qt.
Is the gal to imp qt conversion exact?
Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.
What is an easy way to convert US gallons to UK quarts?
In your head: multiply by 3 (about 9.9% off). 50 gal × 3 ≈ 150 imp qt.
How many UK quarts is 15 gal (a car fuel tank)?
15 gal = 49.9605 imp qt.
How many US gallons is an older recipe measure (1 imp qt)?
1 imp qt = 0.300237 gal.
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