UK Gallons to UK Quarts (imp gal to imp qt) Converter
1 UK gallon (imp gal) = 4 UK quarts (imp qt). To convert UK gallons to UK quarts, multiply by 4: 25 imp gal × 4 = 100 imp qt.
Quick facts
- 1 imp gal = 4 imp qt
- 1 imp qt = 0.25 imp gal
- Formula: imp qt = imp gal × 4
- Quick estimate: multiply by about 4
How to convert UK gallons to UK quarts
- Take the value in UK gallons.
- Multiply it by 4 (the number of UK quarts in one UK gallon).
- Round the result to the precision you need.
Worked example: 25 imp gal × 4 = 100 imp qt.
To convert UK quarts back to UK gallons, multiply by 0.25, or divide by 4.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
UK Gallons to UK Quarts conversion table
| UK Gallons [imp gal] | UK Quarts [imp qt] |
|---|---|
| 0.01 imp gal | 0.04 imp qt |
| 0.1 imp gal | 0.4 imp qt |
| 1 imp gal | 4 imp qt |
| 2 imp gal | 8 imp qt |
| 3 imp gal | 12 imp qt |
| 5 imp gal | 20 imp qt |
| 10 imp gal | 40 imp qt |
| 20 imp gal | 80 imp qt |
| 50 imp gal | 200 imp qt |
| 100 imp gal | 400 imp qt |
| 1000 imp gal | 4000 imp qt |
imp gal to imp qt chart from 1 to 100
- 1 imp gal 4 imp qt
- 2 imp gal 8 imp qt
- 3 imp gal 12 imp qt
- 4 imp gal 16 imp qt
- 5 imp gal 20 imp qt
- 6 imp gal 24 imp qt
- 7 imp gal 28 imp qt
- 8 imp gal 32 imp qt
- 9 imp gal 36 imp qt
- 10 imp gal 40 imp qt
- 11 imp gal 44 imp qt
- 12 imp gal 48 imp qt
- 13 imp gal 52 imp qt
- 14 imp gal 56 imp qt
- 15 imp gal 60 imp qt
- 16 imp gal 64 imp qt
- 17 imp gal 68 imp qt
- 18 imp gal 72 imp qt
- 19 imp gal 76 imp qt
- 20 imp gal 80 imp qt
- 25 imp gal 100 imp qt
- 30 imp gal 120 imp qt
- 35 imp gal 140 imp qt
- 40 imp gal 160 imp qt
- 45 imp gal 180 imp qt
- 50 imp gal 200 imp qt
- 55 imp gal 220 imp qt
- 60 imp gal 240 imp qt
- 65 imp gal 260 imp qt
- 70 imp gal 280 imp qt
- 75 imp gal 300 imp qt
- 80 imp gal 320 imp qt
- 85 imp gal 340 imp qt
- 90 imp gal 360 imp qt
- 95 imp gal 380 imp qt
- 100 imp gal 400 imp qt
UK Quarts to UK Gallons conversion table
| UK Quarts [imp qt] | UK Gallons [imp gal] |
|---|---|
| 0.01 imp qt | 0.0025 imp gal |
| 0.1 imp qt | 0.025 imp gal |
| 1 imp qt | 0.25 imp gal |
| 2 imp qt | 0.5 imp gal |
| 3 imp qt | 0.75 imp gal |
| 5 imp qt | 1.25 imp gal |
| 10 imp qt | 2.5 imp gal |
| 20 imp qt | 5 imp gal |
| 50 imp qt | 12.5 imp gal |
| 100 imp qt | 25 imp gal |
| 1000 imp qt | 250 imp gal |
UK Gallons vs UK Quarts
| UK Gallon | UK Quart | |
|---|---|---|
| Symbol | imp gal | imp qt |
| Equals | 1 imp gal = 4 imp qt | 1 imp qt = 0.25 imp gal |
What is a UK gallon?
The imperial gallon, defined as exactly 4.54609 litres (UK Weights and Measures Act 1985); about 20% larger than the US gallon. Used in the UK and Canada for fuel economy (miles per gallon), garden and aquarium volumes, and older fuel prices.
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 UK Gallons to UK Quarts
UK gallons are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes, while UK quarts are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes. Converting between them changes the scale rather than the system, which is why the factor is a clean ratio.
How big is 1 imp gal compared with 1 imp qt?
1 imp gal is 4 times the size of 1 imp qt, so the number gets bigger when you convert UK gallons to UK quarts.
UK Gallons to UK Quarts without a calculator
- In your head: multiply by 4 (about 0% off). 45 imp gal × 4 ≈ 180 imp qt.
Real-world imp gal to imp qt examples
| Example | UK Gallons | UK Quarts |
|---|---|---|
| One imperial gallon | 1 imp gal | 4 imp qt |
| A small aquarium | 10 imp gal | 40 imp qt |
| A garden water butt | 45 imp gal | 180 imp qt |
| An older recipe measure | 0.25 imp gal | 1 imp qt |
| Half an imperial gallon | 0.5 imp gal | 2 imp qt |
How exact is the imp gal to imp qt factor?
The factor is exact by definition, so any error comes only from rounding. Round the final answer, not the factor, and match the precision of the number you started with.
Mistakes to avoid
- This page uses the imperial (UK) measure. A US measure with the same name is smaller, so make sure your source is British or older Canadian.
Background on UK gallons and UK quarts
The imperial gallon was introduced in 1824 and is defined as exactly 4.54609 litres.
Keep converting
Related conversions you may need next: us gallons to uk quarts, uk gallons to us quarts, uk quarts to liters and uk gallons to liters. The full volume converter lists every unit.
On pakmath.com, the scientific calculator is a useful next step, as is the percentage calculator; for related everyday maths, try the gas mileage calculator on Adzita.
Frequently asked questions
How many UK quarts are in a UK gallon?
There are 4 UK quarts in 1 UK gallon (1 imp gal = 4 imp qt).
How many UK gallons are in a UK quart?
There are 0.25 UK gallons in 1 UK quart (1 imp qt = 0.25 imp gal).
How do I convert UK gallons to UK quarts?
Multiply by 4, or divide by 0.25 if that is easier. Example: 10 imp gal = 40 imp qt.
What is 10 imp gal in UK quarts?
10 imp gal = 40 imp qt.
What is 100 imp gal in UK quarts?
100 imp gal = 400 imp qt.
Is the imp 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 UK gallons to UK quarts?
In your head: multiply by 4 (about 0% off). 45 imp gal × 4 ≈ 180 imp qt.
How many UK quarts is 10 imp gal (a small aquarium)?
10 imp gal = 40 imp qt.
How many UK gallons is an older recipe measure (1 imp qt)?
1 imp qt = 0.25 imp gal.
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