Volume converter
US Gallons to US Quarts
If you need to know how many US Quarts one US Gallons contains, the answer is 4. The conversion is linear, so 10 gal is 40 qt and 100 gal is 400 qt. Use the converter for any other value.
Formula 1 gal = 4 qt
Need the other direction? US Quarts to US Gallons.
How to convert US Gallons to US Quarts
The US liquid gallon is 3.785411784 litres, about 3.79 litres. The US liquid quart is one quarter of a US gallon, about 0.946 litres.
To convert US Gallons to US Quarts, multiply the value in gal by 4. For example, 10 gal × 4 = 40 qt. This works because the ratio between the two units is constant for every value in volume.
Worked examples
| gal | qt |
|---|---|
| 1 gal | 4 qt |
| 2.5 gal | 10 qt |
| 5 gal | 20 qt |
| 10 gal | 40 qt |
| 25 gal | 100 qt |
| 50 gal | 200 qt |
| 100 gal | 400 qt |
Reverse conversion
| qt | gal |
|---|---|
| 1 qt | 0.25 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 |
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 gal is 4,000 qt.
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.
gal to qt 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 Gallons (gal) | US Quarts (qt) |
|---|---|
| 1 gal | 4 qt |
| 2 gal | 8 qt |
| 3 gal | 12 qt |
| 4 gal | 16 qt |
| 5 gal | 20 qt |
| 6 gal | 24 qt |
| 7 gal | 28 qt |
| 8 gal | 32 qt |
| 9 gal | 36 qt |
| 10 gal | 40 qt |
| 11 gal | 44 qt |
| 12 gal | 48 qt |
| 13 gal | 52 qt |
| 14 gal | 56 qt |
| 15 gal | 60 qt |
| 16 gal | 64 qt |
| 17 gal | 68 qt |
| 18 gal | 72 qt |
| 19 gal | 76 qt |
| 20 gal | 80 qt |
| 21 gal | 84 qt |
| 22 gal | 88 qt |
| 23 gal | 92 qt |
| 24 gal | 96 qt |
| 25 gal | 100 qt |
| 26 gal | 104 qt |
| 27 gal | 108 qt |
| 28 gal | 112 qt |
| 29 gal | 116 qt |
| 30 gal | 120 qt |
| 31 gal | 124 qt |
| 32 gal | 128 qt |
| 33 gal | 132 qt |
| 34 gal | 136 qt |
| 35 gal | 140 qt |
| 36 gal | 144 qt |
| 37 gal | 148 qt |
| 38 gal | 152 qt |
| 39 gal | 156 qt |
| 40 gal | 160 qt |
| 41 gal | 164 qt |
| 42 gal | 168 qt |
| 43 gal | 172 qt |
| 44 gal | 176 qt |
| 45 gal | 180 qt |
| 46 gal | 184 qt |
| 47 gal | 188 qt |
| 48 gal | 192 qt |
| 49 gal | 196 qt |
| 50 gal | 200 qt |
| 60 gal | 240 qt |
| 70 gal | 280 qt |
| 80 gal | 320 qt |
| 90 gal | 360 qt |
| 100 gal | 400 qt |
Frequently asked questions
How many US Quarts are in 1 US Gallons?
1 gal equals 4 qt.
How do I convert US Gallons to US Quarts?
Multiply the gal value by 4. Example: 25 gal = 100 qt.
What is 2.5 gal in qt?
2.5 gal = 10 qt.
Is the gal to qt 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.