Convert Imperial gallons to Imperial quarts
1 imperial gallon is 4 qt (UK). One imperial gallon is exactly 4 imperial quarts.
One imperial gallon is 4 imperial quarts. To convert imperial gallons to imperial quarts, multiply by 4; to go the other way, divide by 4 or multiply by 0.25. The factor is exact rather than rounded: it follows from NIST Handbook 130.
Factor checked against the defining standard · How we check
- Imperial gallons × 4
1 * 44 qt (UK)
1 imperial gallon in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 922.3295428 tsp | × 922.329542788 |
| US tablespoons | 307.4431809 tbsp | × 307.443180929 |
| US fluid ounces | 153.7215905 fl oz | × 153.721590465 |
| US cups | 19.21519881 cup | × 19.2151988081 |
| US pints | 9.607599404 pt | × 9.60759940404 |
| US quarts | 4.803799702 qt | × 4.80379970202 |
| US gallons | 1.200949926 gal | × 1.2009499255 |
| milliliters | 4,546.09 ml | × 4,546.09 |
| liters | 4.54609 L | × 4.54609 |
| imperial gallons (as entered) | 1 gal (UK) | — |
| imperial quarts | 4 qt (UK) | × 4 |
| imperial pints | 8 pt (UK) | × 8 |
| imperial fluid ounces | 160 fl oz (UK) | × 160 |
| imperial gills | 32 gi (UK) | × 32 |
| cubic millimetres | 4,546,090 mm³ | × 4,546,090 |
| cubic centimetres | 4,546.09 cm³ | × 4,546.09 |
| cubic inches | 277.4194328 in³ | × 277.419432792 |
| cubic feet | 0.1605436532 ft³ | × 0.160543653236 |
| cubic yards | 0.005946061231 yd³ | × 0.00594606123096 |
| cubic metres | 0.00454609 m³ | × 0.00454609 |
Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert imperial gallons to imperial quarts? The converter and the working
- 1.Take the measurement in imperial gallons.
- 2.Multiply by 4 — that is how many imperial quarts fit in one imperial gallon.
- 3.To go back the other way, divide by 4, or multiply by 0.25.
Worked example: 25 imperial gallons to imperial quarts
- Formula
- gal (UK) × 4 = qt (UK)
- Arithmetic
- 25 × 4 = 100 qt (UK)
- Answer
- 25 gal (UK) = 100 qt (UK)
The factor is exact, so this figure is exact too — only the display is rounded.
Imperial gallons to imperial quarts conversion table
| Imperial gallons | Imperial quarts |
|---|---|
| 1 gal (UK) | 4 qt (UK) |
| 2 gal (UK) | 8 qt (UK) |
| 3 gal (UK) | 12 qt (UK) |
| 4 gal (UK) | 16 qt (UK) |
| 5 gal (UK) | 20 qt (UK) |
| 6 gal (UK) | 24 qt (UK) |
| 7 gal (UK) | 28 qt (UK) |
| 8 gal (UK) | 32 qt (UK) |
| 9 gal (UK) | 36 qt (UK) |
| 10 gal (UK) | 40 qt (UK) |
| 12 gal (UK) | 48 qt (UK) |
| 15 gal (UK) | 60 qt (UK) |
| 20 gal (UK) | 80 qt (UK) |
| 25 gal (UK) | 100 qt (UK) |
| 50 gal (UK) | 200 qt (UK) |
| 100 gal (UK) | 400 qt (UK) |
| 200 gal (UK) | 800 qt (UK) |
| 300 gal (UK) | 1,200 qt (UK) |
| 500 gal (UK) | 2,000 qt (UK) |
| 1000 gal (UK) | 4,000 qt (UK) |
| 2000 gal (UK) | 8,000 qt (UK) |
| 5000 gal (UK) | 20,000 qt (UK) |
| 10000 gal (UK) | 40,000 qt (UK) |
What is an imperial gallon?
Exactly 4.54609 liters since 1985, and the reason UK and US fuel economy figures cannot be compared: it is 20% larger than the US gallon, so 40 mpg in Britain is about 33 mpg in America on the same car.
What is an imperial quart?
A quarter of an imperial gallon, 1.1365225 liters exactly. It is larger than a US quart by the same fifth that separates the two gallons.
How many imperial quarts are in an imperial gallon?
One imperial gallon is 4 imperial quarts, exactly. Going the other way, one imperial quart is 0.25 imperial gallons. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every volume unit here
The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to an imperial gallon.
Cite this page
- APA
- Rule Calculator. (2026). Convert Imperial gallons to imperial quarts. Rule Calculator. https://rulecalculators.com/convert/imperial-gallon-to-imperial-quart
- MLA
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- Chicago
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Questions people actually ask
- How many imperial quarts are in an imperial gallon?
- 4. A quarter of an imperial gallon, 1.1365225 liters exactly. It is larger than a US quart by the same fifth that separates the two gallons.
- How do I convert imperial quarts back to imperial gallons?
- Divide by 4, or multiply by 0.25 — they are the same operation.
Other volume conversions
Imperial quarts to imperial gallons — the same conversion the other way.