Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 qt | 0.000208169 gal(UK) | |
| 0.01 qt | 0.00208169 gal(UK) | |
| 0.1 qt | 0.0208169 gal(UK) | |
| 1 qt | 0.208169 gal(UK) | |
| 5 qt | 1.04084 gal(UK) | |
| 10 qt | 2.08169 gal(UK) | |
| 50 qt | 10.4084 gal(UK) | |
| 100 qt | 20.8169 gal(UK) | |
| 1000 qt | 208.169 gal(UK) |
Common us quart values converted to uk gallon — factor: 1 qt = 0.2082 gal(UK)
| US Quart (qt) | UK Gallon (gal(UK)) | Context |
|---|---|---|
| 0.0625 qt | 0.01301 gal(UK) | Cup |
| 0.125 qt | 0.02602 gal(UK) | Half pint |
| 0.25 qt | 0.05204 gal(UK) | Pint |
| 0.5 qt | 0.1041 gal(UK) | Large bottle |
| 1 qt | 0.2082 gal(UK) | Quart bottle |
| 2 qt | 0.4163 gal(UK) | Half gallon |
| 4 qt | 0.8327 gal(UK) | Gallon jug |
| 8 qt | 1.665 gal(UK) | 2 gallons |
| 16 qt | 3.331 gal(UK) | 4 gallons |
| 32 qt | 6.661 gal(UK) | 8 gallons |
| 64 qt | 13.32 gal(UK) | 16 gallons |
| 128 qt | 26.65 gal(UK) | 32 gallons |
| 200 qt | 41.63 gal(UK) | 50 gallons |
| 256 qt | 53.29 gal(UK) | 50 gallons |
| 500 qt | 104.1 gal(UK) | Large tank |
Converting us quart to uk gallon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using uk gallon, or a laboratory protocol may specify volumes in us quart that need to be measured with equipment calibrated in uk gallon.
In everyday use, knowing that 5 qt = 1.041 gal(UK) and 10 qt = 2.082 gal(UK) covers most common situations. For bulk calculations, 100 qt = 20.82 gal(UK) is a useful anchor. The reverse conversion — uk gallon back to us quart — uses the factor 4.804, so 1 gal(UK) = 4.804 qt.
All conversions use the internationally recognized factor of exactly 1 qt = 0.2082 gal(UK). Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: UK Gallon = US Quart × 0.20816856
Multiply any us quart value by 0.20816856 to get uk gallon. One us quart equals 0.20816856 gal(UK).
Reverse: US Quart = UK Gallon × 4.8037994
1 qt = 0.20816856 gal(UK). Memorize this for instant mental estimates.
Use 0.2082 as a quick mental factor. Multiply your US quarts value by this to estimate UK gallons.
To verify: multiply your result by 4.8037994 to recover the original qt value.
Changes engine oil sold in quart bottles, the standard US motor oil size.
Produces and sells ice cream in quart containers, the classic American retail size.
Stores soups, stocks, and sauces in quart deli containers for organized kitchen prep.
Buys house paint in quart cans for smaller projects, about 90 sq ft per coat.
Scales recipes using quarts: 4 cups = 1 quart for easy mental division.
Measures buffer solutions and culture media in quart batches for microbiology.
The US liquid quart is one-quarter of a US gallon, equal to 946.353 mL. The word 'quart' comes from Old French quarte (fourth part), dating to medieval England.
Quarts are standard in American cooking and food packaging: motor oil, paint, cream, and ice cream are commonly sold in quart containers.
Interesting fact: The US quart and the Imperial quart differ significantly — the Imperial quart is 1.136 liters versus 0.946 liters for the US quart.
The Imperial gallon was defined by the British Weights and Measures Act of 1824 as the volume of ten pounds of water at 62°F, later fixed to exactly 4.54609 liters in 1985.
UK gallons are still used in Britain for fuel pricing. Road signs show consumption in miles per Imperial gallon, making UK cars appear more fuel-efficient than identical US models.
Interesting fact: 1 Imperial gallon = 1.20095 US gallons. Confusing the two has caused real-world errors in cross-border fuel cost calculations.