Volume converter
US Quarts to US Gallons
Converting US Quarts to US Gallons is a single multiplication when you know the factor. One qt equals 0.25 gal, so multiply the value in qt by 0.25. The calculator below works in both directions and accepts decimals.
Formula 1 qt = 0.25 gal
Need the other direction? US Gallons to US Quarts.
How to convert US Quarts to US Gallons
The US liquid quart is one quarter of a US gallon, about 0.946 litres. The US liquid gallon is 3.785411784 litres, about 3.79 litres.
To convert US Quarts to US Gallons, multiply the value in qt by 0.25. For example, 10 qt × 0.25 = 2.5 gal. This works because the ratio between the two units is constant for every value in volume.
Worked examples
| qt | gal |
|---|---|
| 1 qt | 0.25 gal |
| 2.5 qt | 0.625 gal |
| 5 qt | 1.25 gal |
| 10 qt | 2.5 gal |
| 25 qt | 6.25 gal |
| 50 qt | 12.5 gal |
| 100 qt | 25 gal |
Reverse conversion
| gal | qt |
|---|---|
| 1 gal | 4 qt |
| 5 gal | 20 qt |
| 10 gal | 40 qt |
| 25 gal | 100 qt |
| 50 gal | 200 qt |
| 100 gal | 400 qt |
When this conversion is useful
This is the calculation you need when you are cooking, dosing a liquid or planning a shipment and the units do not match. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 qt is 250 gal.
Is the conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
qt to gal conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| US Quarts (qt) | US Gallons (gal) |
|---|---|
| 1 qt | 0.25 gal |
| 2 qt | 0.5 gal |
| 3 qt | 0.75 gal |
| 4 qt | 1 gal |
| 5 qt | 1.25 gal |
| 6 qt | 1.5 gal |
| 7 qt | 1.75 gal |
| 8 qt | 2 gal |
| 9 qt | 2.25 gal |
| 10 qt | 2.5 gal |
| 11 qt | 2.75 gal |
| 12 qt | 3 gal |
| 13 qt | 3.25 gal |
| 14 qt | 3.5 gal |
| 15 qt | 3.75 gal |
| 16 qt | 4 gal |
| 17 qt | 4.25 gal |
| 18 qt | 4.5 gal |
| 19 qt | 4.75 gal |
| 20 qt | 5 gal |
| 21 qt | 5.25 gal |
| 22 qt | 5.5 gal |
| 23 qt | 5.75 gal |
| 24 qt | 6 gal |
| 25 qt | 6.25 gal |
| 26 qt | 6.5 gal |
| 27 qt | 6.75 gal |
| 28 qt | 7 gal |
| 29 qt | 7.25 gal |
| 30 qt | 7.5 gal |
| 31 qt | 7.75 gal |
| 32 qt | 8 gal |
| 33 qt | 8.25 gal |
| 34 qt | 8.5 gal |
| 35 qt | 8.75 gal |
| 36 qt | 9 gal |
| 37 qt | 9.25 gal |
| 38 qt | 9.5 gal |
| 39 qt | 9.75 gal |
| 40 qt | 10 gal |
| 41 qt | 10.25 gal |
| 42 qt | 10.5 gal |
| 43 qt | 10.75 gal |
| 44 qt | 11 gal |
| 45 qt | 11.25 gal |
| 46 qt | 11.5 gal |
| 47 qt | 11.75 gal |
| 48 qt | 12 gal |
| 49 qt | 12.25 gal |
| 50 qt | 12.5 gal |
| 60 qt | 15 gal |
| 70 qt | 17.5 gal |
| 80 qt | 20 gal |
| 90 qt | 22.5 gal |
| 100 qt | 25 gal |
Frequently asked questions
How many US Gallons are in 1 US Quarts?
1 qt equals 0.25 gal.
How do I convert US Quarts to US Gallons?
Multiply the qt value by 0.25. Example: 25 qt = 6.25 gal.
What is 2.5 qt in gal?
2.5 qt = 0.625 gal.
Is the qt to gal conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.