Quart to Gallon Converter
1 US gallon = 4 quarts
1 Gallon =
4
quarts (qt)
Divide quarts by 4 to get gallons
1 qt0.25 gal
2 qt0.5 gal
4 qt1 gal
8 qt2 gal
qt =gal
How to Convert Quarts to Gallons
Gallons = Quarts ÷ 4
US: 1 gallon = 4 quarts exactly
Quarts = Gallons × 4
To convert back: multiply gallons by 4
4 quarts in gallons1 gallon
8 quarts in gallons2 gallons
16 quarts in gallons4 gallons
20 quarts in gallons5 gallons
Easy memory trick: Think "quart" = "quarter gallon." 1 quart is literally one quarter (¼) of a gallon. So 4 quarts = 1 full gallon.
Quarts to Gallons Reference Table
| Quarts (qt) | Gallons (gal) | Fluid Ounces |
|---|---|---|
| 0.25 qt | 0.0625 gal | 8 fl oz |
| 0.5 qt | 0.125 gal | 16 fl oz |
| 1 qt | 0.25 gal | 32 fl oz |
| 2 qt | 0.5 gal | 64 fl oz |
| 3 qt | 0.75 gal | 96 fl oz |
| 4 qt | 1 gal | 128 fl oz |
| 5 qt | 1.25 gal | 160 fl oz |
| 6 qt | 1.5 gal | 192 fl oz |
| 7 qt | 1.75 gal | 224 fl oz |
| 8 qt | 2 gal | 256 fl oz |
| 10 qt | 2.5 gal | 320 fl oz |
| 12 qt | 3 gal | 384 fl oz |
| 16 qt | 4 gal | 512 fl oz |
| 20 qt | 5 gal | 640 fl oz |
| 24 qt | 6 gal | 768 fl oz |
| 32 qt | 8 gal | 1024 fl oz |
| 40 qt | 10 gal | 1280 fl oz |
US Liquid Volume Hierarchy
| Unit | fl oz | Quarts | Gallons |
|---|---|---|---|
| 1 fl oz | 1 | 0.03125 | 0.0078 |
| 1 cup | 8 | 0.25 | 0.0625 |
| 1 pint | 16 | 0.5 | 0.125 |
| 1 quart | 32 | 1 | 0.25 |
| 1 gallon | 128 | 4 | 1 |
Frequently Asked Questions
How many quarts in a gallon?
There are exactly 4 US quarts in 1 US gallon. 1 quart = ¼ gallon. This is why "quart" means "quarter" — it's one-fourth of a gallon.
How many quarts in half a gallon?
Half a gallon = 2 quarts = 64 fluid ounces. A standard half-gallon milk jug holds 2 quarts.
How many quarts is 5 gallons?
5 gallons = 20 quarts. Multiply gallons × 4: 5 × 4 = 20 quarts. A 5-gallon water cooler jug holds 20 quarts.
How many gallons is 6 quarts?
6 quarts = 1.5 gallons. Divide by 4: 6 ÷ 4 = 1.5 gallons = 1 gallon and 2 quarts.