How Many Cups in a Gallon
Jump to quick answer ↓There are 16 cups in 1 gallon (US liquid). That's 1 gal = 16 c = 8 pt = 4 qt = 128 fl oz ≈ 3.79 L.
1 gallon = 16 cups = 128 fl oz ≈ 3785.41 ml.
| Gallons (gal) | Cups (c) |
|---|---|
| ⅛ gallon | 2 cups |
| ¼ gallon | 4 cups |
| ½ gallon | 8 cups |
| ¾ gallon | 12 cups |
| 1 gallon | 16 cups |
| 2 gallons | 32 cups |
Note: This uses US liquid measurements. Imperial and US dry volumes differ. Fluid ounces measure volume, not weight (ounces).
Related quick answers:How many quarts in a gallon • How many cups in a gallon • How many ounces in a quart • How many cups in a pint
Interactive Converter
Understanding Measurement Systems
US Liquid vs Imperial vs Dry
This calculator uses US liquid measurements, which are standard in American recipes. Here's how they differ:
- US Liquid: 1 quart = 32 fl oz = 946.35 ml (what we use here)
- Imperial (UK): 1 quart = 40 fl oz = 1136.52 ml (20% larger)
- US Dry: 1 dry quart = 37.24 fl oz = 1101.22 ml (for dry goods like berries)
Most US recipes use liquid measurements even for dry ingredients like flour and sugar, which is why we focus on liquid conversions here. Note: Fluid ounces measure volume, while ounces (weight) measure mass - they're different units.
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Frequently Asked Questions
What is a gallon?
A US liquid gallon is 128 fluid ounces, equal to 4 quarts, 8 pints, or 16 cups (≈ 3.79 L).
How many cups are in a gallon?
There are 16 cups in 1 US gallon. This equals 4 quarts or 8 pints.
Cups to gallon?
To convert cups to gallons, divide by 16. For example: 32 cups ÷ 16 = 2 gallons.
How many cups in half a gallon?
There are 8 cups in half a gallon (½ gallon). This equals 2 quarts or 64 fluid ounces.
How many cups in a quarter gallon?
There are 4 cups in a quarter gallon (¼ gallon). This equals 1 quart or 32 fluid ounces.
Is 16 cups a gallon?
Yes, 16 cups equal exactly 1 gallon in US liquid measurements.
How to remember cups in a gallon?
Remember: 16 cups = 1 gallon. Or think: 4 cups per quart × 4 quarts per gallon = 16 cups.
How many cups are in ¾ gallon?
12 cups.
How many cups are in ⅓ gallon?
About 5⅓ cups (⅓ gal ≈ 42.67 fl oz), but ⅓ gallon isn't common in recipes.
Does this apply to UK/Imperial measurements?
No, this calculator uses US liquid measurements. Imperial and dry quarts differ.
How many cups are in 2 gallons?
32 cups. (2 gal × 16 = 32 c.)
How many milliliters in a gallon?
3,785.41 ml. (1 gal = 3.79 L = 3,785.41 ml.)
Related Conversions
Methodology
- • Definitions from NIST standards
- • Decimal precision: up to 4 decimal places
- • Fractions rounded to nearest ⅛
- • US liquid measurements (not dry/Imperial)
Quality Assurance
Sources: US customary units per NIST standards
Reviewed by: Sarah Johnson, Professional Recipe Developer