US Quarts to Imperial Gallons Converter
1 US quart ≈ 0.208168546 imperial gallons
1 US quart equals 0.208169 imperial gallons
How to convert US quarts to imperial gallons
Choose the named US, Imperial or metric unit before converting a recipe or container size. A US liquid gallon is 3.785411784 L; an Imperial gallon is 4.54609 L. Volume alone cannot give ingredient mass without density.
imp gal = qt × 0.2081685462One US quart is 0.2081685462 imperial gallons, so a single multiplication converts any value.
2.08169 imp gal ≈ 10 × 0.2081685462US quarts to imperial gallons conversion table
Common values in US quarts, converted to imperial gallons.
| US quarts (qt) | Imperial gallons (imp gal) |
|---|---|
| 1 | 0.20816855 |
| 2 | 0.41633709 |
| 3 | 0.62450564 |
| 4 | 0.83267418 |
| 5 | 1.0408427 |
| 10 | 2.0816855 |
| 20 | 4.1633709 |
| 25 | 5.2042137 |
| 50 | 10.408427 |
| 100 | 20.816855 |
| 250 | 52.042137 |
| 500 | 104.08427 |
| 1,000 | 208.16855 |
About these units
US quartqt
One quarter of a US gallon, or 2 US pints.
imperial gallonimp gal
The UK gallon: exactly 4.54609 litres.
Reference: UK Weights and Measures Act 1985.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.