US Quart to US Gallon Conversion Chart
| US Quart (quart) | US Gallon (gallon) | Reference Benchmark | Formula Step |
|---|---|---|---|
| 1 quart | 0.25 gallon | One-US-Quart Motor Oil Single Packaging Bottle | 1 × 0.25 = 0.25 gal-us |
| 2 quart | 0.5 gallon | Two-US-Quart Half-Gallon Glass Beverage Pitcher | 2 × 0.25 = 0.5 gal-us |
| 3 quart | 0.75 gallon | Three-Quart Heavy Enamel Kitchen Dutch Oven | 3 × 0.25 = 0.75 gal-us |
| 4 quart | 1 gallon | Standard Four-Quart One-Gallon Milk Jug Vessel | 4 × 0.25 = 1 gal-us |
| 5 quart | 1.25 gallon | Five-Quart Automotive Oil Sump Service Capacity | 5 × 0.25 = 1.25 gal-us |
| 6 quart | 1.5 gallon | Six-Quart Countertop Electric Pressure Cooker | 6 × 0.25 = 1.5 gal-us |
| 8 quart | 2 gallon | Eight-Quart Commercial Stainless Steel Stockpot | 8 × 0.25 = 2 gal-us |
| 10 quart | 2.5 gallon | Ten-Quart Two-and-a-Half Gallon Beverage Chiller | 10 × 0.25 = 2.5 gal-us |
| 12 quart | 3 gallon | Twelve-Quart Heavy Canning Stockpot Water Bath Tub | 12 × 0.25 = 3 gal-us |
| 16 quart | 4 gallon | Sixteen-Quart Four-Gallon Commercial Seafood Boiler | 16 × 0.25 = 4 gal-us |
| 20 quart | 5 gallon | Twenty-Quart Five-Gallon Industrial Paint Pail | 20 × 0.25 = 5 gal-us |
| 24 quart | 6 gallon | Twenty-Four-Quart Large Brewery Fermentation Carboy | 24 × 0.25 = 6 gal-us |
| 32 quart | 8 gallon | Thirty-Two-Quart Eight-Gallon Wet-Vacuum Tank | 32 × 0.25 = 8 gal-us |
| 40 quart | 10 gallon | Forty-Quart Ten-Gallon Residential Aquarium Tank | 40 × 0.25 = 10 gal-us |
| 100 quart | 25 gallon | One-Hundred-Quart Large Commercial Coolant Batch | 100 × 0.25 = 25 gal-us |
US Quart to US Gallon Formula & Unit Definitions
One US liquid quart equals exactly 0.25 US liquid gallons (1 qt = 1/4 gal). To convert US quarts to US gallons, divide by 4 (or multiply by 0.25). Conversely, to convert US gallons to US quarts, multiply by 4.
Quick Estimation: To mentally convert quarts to gallons, divide by 4. For instance, 16 quarts divided by 4 equals 4 gallons.
US Liquid Quart Scale (qt)
US Statutory Liquid Unit- Creator & Origin: Originating as a quarter-gallon measure in medieval English commerce.
- Standard Definition: Standardized by NIST as exactly 57.75 cubic inches (946.352946 mL).
- Everyday Focus: Motor oil bottles, restaurant broth containers, and ice cream tubs.
US Liquid Gallon Scale (gal)
US Statutory Liquid Unit- Creator & Origin: Derived from the Queen Anne wine gallon established in England in 1707.
- Standard Definition: Defined by NIST as exactly 231 cubic inches (3.785411784 liters).
- Everyday Focus: Gasoline dispensing, dairy milk jugs, paint buckets, and chemical drums.
Frequently Asked Questions
Q.How many US gallons are in one US liquid quart?
There is exactly 0.25 (1/4) US liquid gallon in one US liquid quart (1 qt = 0.25 gal).
Q.What is the formula to convert US quarts to US gallons?
The formula is: US Gallons = US Quarts / 4 (or US Quarts × 0.25). For example, 10 qt / 4 = 2.5 gal.
Q.How do I reverse this calculation from US gallons to US quarts?
To convert US gallons back to US quarts, multiply by 4. You can also use our US Gallon to US Quart Converter.
Q.Is 4 quarts always exactly 1 gallon?
Yes. In the US customary liquid measure system, 4 liquid quarts equals exactly 1 liquid gallon by statutory legal definition.