UK Quarts to UK Gallons (imp qt to imp gal) Converter
1 UK quart (imp qt) = 0.25 UK gallons (imp gal). To convert UK quarts to UK gallons, multiply by 0.25: 25 imp qt × 0.25 = 6.25 imp gal.
Quick facts
- 1 imp qt = 0.25 imp gal
- 1 imp gal = 4 imp qt
- Formula: imp gal = imp qt × 0.25
- Quick estimate: multiply by about 0.25
How to convert UK quarts to UK gallons
- Take the value in UK quarts.
- Multiply it by 0.25 (the number of UK gallons in one UK quart).
- Round the result to the precision you need.
Worked example: 25 imp qt × 0.25 = 6.25 imp gal.
To convert UK gallons back to UK quarts, multiply by 4, or divide by 0.25.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
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 |
imp qt to imp gal chart from 1 to 100
- 1 imp qt 0.25 imp gal
- 2 imp qt 0.5 imp gal
- 3 imp qt 0.75 imp gal
- 4 imp qt 1 imp gal
- 5 imp qt 1.25 imp gal
- 6 imp qt 1.5 imp gal
- 7 imp qt 1.75 imp gal
- 8 imp qt 2 imp gal
- 9 imp qt 2.25 imp gal
- 10 imp qt 2.5 imp gal
- 11 imp qt 2.75 imp gal
- 12 imp qt 3 imp gal
- 13 imp qt 3.25 imp gal
- 14 imp qt 3.5 imp gal
- 15 imp qt 3.75 imp gal
- 16 imp qt 4 imp gal
- 17 imp qt 4.25 imp gal
- 18 imp qt 4.5 imp gal
- 19 imp qt 4.75 imp gal
- 20 imp qt 5 imp gal
- 25 imp qt 6.25 imp gal
- 30 imp qt 7.5 imp gal
- 35 imp qt 8.75 imp gal
- 40 imp qt 10 imp gal
- 45 imp qt 11.25 imp gal
- 50 imp qt 12.5 imp gal
- 55 imp qt 13.75 imp gal
- 60 imp qt 15 imp gal
- 65 imp qt 16.25 imp gal
- 70 imp qt 17.5 imp gal
- 75 imp qt 18.75 imp gal
- 80 imp qt 20 imp gal
- 85 imp qt 21.25 imp gal
- 90 imp qt 22.5 imp gal
- 95 imp qt 23.75 imp gal
- 100 imp qt 25 imp gal
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 |
UK Quarts vs UK Gallons
| UK Quart | UK Gallon | |
|---|---|---|
| Symbol | imp qt | imp gal |
| Equals | 1 imp qt = 0.25 imp gal | 1 imp gal = 4 imp qt |
What is a UK quart?
A UK imperial unit equal to 2 imperial pints. Found in older UK and Canadian recipes and measuring jugs.
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.
Where You Will Meet UK Quarts and UK Gallons
UK quarts are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes, while UK gallons 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 qt compared with 1 imp gal?
1 imp qt is only 0.25 of 1 imp gal: you need 4 UK quarts to make 1 imp gal, so the number gets smaller when you convert.
UK Quarts to UK Gallons without a calculator
- Or divide: divide by 4 (exact), which is often easier than multiplying by a small decimal.
- Fraction trick: multiply by 1, then divide by 4 (within 0%).
Real-world imp qt to imp gal examples
| Example | UK Quarts | UK Gallons |
|---|---|---|
| An older recipe measure | 1 imp qt | 0.25 imp gal |
| Half an imperial gallon | 2 imp qt | 0.5 imp gal |
| One imperial gallon | 4 imp qt | 1 imp gal |
| A small aquarium | 40 imp qt | 10 imp gal |
| A garden water butt | 180 imp qt | 45 imp gal |
How exact is the imp qt to imp gal 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
- 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 quarts and UK gallons
The imperial gallon was introduced in 1824 and is defined as exactly 4.54609 litres.
Keep converting
People who convert uk quarts to uk gallons often need us quarts to uk gallons, uk quarts to us gallons, uk gallons to liters and uk gallons to us gallons. The full volume converter lists every unit.
On pakmath.com, the percentage calculator is a useful next step; for related everyday maths, try the fuel cost calculator on Adzita.
Frequently asked questions
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 many UK quarts are in a UK gallon?
There are 4 UK quarts in 1 UK gallon (1 imp gal = 4 imp qt).
How do I convert UK quarts to UK gallons?
Multiply the number of UK quarts by 0.25. For example, 10 imp qt × 0.25 = 2.5 imp gal. To convert back, multiply by 4.
What is 10 imp qt in UK gallons?
10 imp qt = 2.5 imp gal.
What is 100 imp qt in UK gallons?
100 imp qt = 25 imp gal.
How accurate is this UK quart to UK gallon converter?
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 quarts to UK gallons?
Or divide: divide by 4 (exact), which is often easier than multiplying by a small decimal.
How many UK gallons is 2 imp qt (half an imperial gallon)?
2 imp qt = 0.5 imp gal.
How many UK quarts is a garden water butt (45 imp gal)?
45 imp gal = 180 imp qt.
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