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 qt0.0625 gal8 fl oz
0.5 qt0.125 gal16 fl oz
1 qt0.25 gal32 fl oz
2 qt0.5 gal64 fl oz
3 qt0.75 gal96 fl oz
4 qt1 gal128 fl oz
5 qt1.25 gal160 fl oz
6 qt1.5 gal192 fl oz
7 qt1.75 gal224 fl oz
8 qt2 gal256 fl oz
10 qt2.5 gal320 fl oz
12 qt3 gal384 fl oz
16 qt4 gal512 fl oz
20 qt5 gal640 fl oz
24 qt6 gal768 fl oz
32 qt8 gal1024 fl oz
40 qt10 gal1280 fl oz

US Liquid Volume Hierarchy

Unitfl ozQuartsGallons
1 fl oz10.031250.0078
1 cup80.250.0625
1 pint160.50.125
1 quart3210.25
1 gallon12841

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.

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