Quarts to Gallons Converter
Common Conversions
| qt | gal |
|---|---|
| 1 | 0.25 |
| 2 | 0.5 |
| 4 | 1 |
| 8 | 2 |
| 10 | 2.5 |
| 16 | 4 |
| 20 | 5 |
| 40 | 10 |
| 100 | 25 |
| 200 | 50 |
| 500 | 125 |
| 1000 | 250 |
Why this conversion matters in chemistry
Frying-oil turnover math hits this regularly. A 40 qt/day retail-kitchen fryer turnover is exactly 10 US gal/day. In practice you reach for it when correlating free fatty acid buildup (AOCS Ca 5a-40 titration) and polar-compound accumulation against daily oil-replacement cadence in a fast-food kitchen QC program. The ratio of 1/4 gal per qt is geometric, baked into the US customary system.
Formula
gallons = quarts ÷ 4
Worked Examples
4 qt = 1 gal
The conversion anchor — exactly one US gallon.
1 qt = 0.25 gal
One quart — exactly a quarter gallon.
8 qt = 2 gal
Two gallons — about a typical bulk-purchase quantity.
20 qt = 5 gal
Five gallons — about a typical bulk-prep volume.
Frequently Asked Questions
How do I convert quarts to gallons?
Divide by 4. So 8 quarts becomes 2 gallons. The relationship is exact through the US customary definition of 4 quarts per gallon.
What is a quart in metric?
1 US quart = 946.353 mL — about 0.946 L, slightly less than one liter. The factor is exact through the US gallon definition.
Is there a UK quart?
Yes — and it's larger: 1 UK (imperial) quart = 1136.52 mL. Always confirm which system applies before any quantitative conversion.