Convert US quarts to imperial gallons
1 US quart = 0.208169 imperial gallons · imp gal = qt ÷ 4.803799702
When you need this conversion
This conversion goes from US quarts, a quarter gallon used for milk, oil, and stock, to imperial gallons, the UK volume unit about 20 percent larger than a US gallon. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
US quarts to imperial gallons conversion table
| US quarts (qt) | Imperial gallons (imp gal) |
|---|---|
| 1 qt | 0.208169 imp gal |
| 2 qt | 0.416337 imp gal |
| 3 qt | 0.624506 imp gal |
| 5 qt | 1.0408 imp gal |
| 10 qt | 2.0817 imp gal |
| 15 qt | 3.1225 imp gal |
| 20 qt | 4.1634 imp gal |
| 25 qt | 5.2042 imp gal |
| 50 qt | 10.4084 imp gal |
| 75 qt | 15.6126 imp gal |
| 100 qt | 20.8169 imp gal |
| 250 qt | 52.0421 imp gal |
| 500 qt | 104.08 imp gal |
| 1,000 qt | 208.17 imp gal |
The formula
imp gal = qt ÷ 4.803799702Because both units measure volume, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Imperial gallons to US quarts →Related volume conversions
- Milliliters to US cups
- Milliliters to US fluid ounces
- Liters to cubic meters
- Liters to US gallons
- Cubic meters to liters
- Cubic meters to cubic feet
- Cubic feet to cubic meters
- US gallons to liters
- US cups to milliliters
- US fluid ounces to milliliters
- Milliliters to imperial gallons
- Liters to imperial gallons
Frequently asked questions
- How many imperial gallons are in a US quart?
- There are 0.208169 imperial gallons in 1 US quart. The formula is imp gal = qt ÷ 4.803799702.
- How do you convert US quarts to imperial gallons?
- Use the formula imp gal = qt ÷ 4.803799702. For example, 10 US quarts equals 2.0817 imperial gallons.
- Is the US quarts to imperial gallons conversion exact?
- Yes. US quarts and imperial gallons are both units of volume, related by an exact defined factor. Displayed results are rounded for readability.
- What is qt short for?
- qt is the standard symbol for US quart. imp gal is the symbol for imperial gallon.