US liquid quart to Imperial gallon
Convert US liquid quart (US qt) to Imperial gallon (Imp gal). Use an editable volume converter, conversion formula, and reference table.
1 US qt = 0.2081685462 Imp gal
Conversion formula
One US liquid quart equals 0.2081685462 Imperial gallon. Multiply your value in US liquid quart by this factor to get Imperial gallon. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 US liquid quart:5 × 0.2081685462 = 1.040842731 Imp gal
Conversion table
| US liquid quart (US qt) | Imperial gallon (Imp gal) |
|---|---|
| 0.01 | 0.002081685462 |
| 0.1 | 0.02081685462 |
| 1 | 0.2081685462 |
| 2 | 0.4163370923 |
| 5 | 1.040842731 |
| 10 | 2.081685462 |
| 25 | 5.204213654 |
| 50 | 10.40842731 |
| 100 | 20.81685462 |
| 1000 | 208.1685462 |
About these measurements
Volume describes three-dimensional space or liquid capacity.
The base reference used here is the liter. One US liquid quart is 0.946352946 base units; one Imperial gallon is 4.54609 base units.
Important distinctions
US liquid measures and Imperial measures are different. Dry gallons and recipe cups are excluded.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert US qt to Imp gal?
Multiply the quantity in US qt by 0.2081685462. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the Imperial gallon to US liquid quart converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
