US Cups to US Liquid Gallons Converter
Convert US cups to US liquid gallons instantly with this free US cups to US liquid gallons converter. Enter any value to get an accurate volume conversion, plus the formula, the conversion factor and a full reference table.
What is 1 US cup in US liquid gallons?
1 US cup is equal to exactly 0.0625 US liquid gallons.
1 ÷ 16 = 0.0625 US liquid gallons
1 US cup = 0.0625 US liquid gallons
US cups to US liquid gallons formula
gal = cup ÷ 16
The US cups to US liquid gallons conversion factor is 0.0625, which is exact by definition. 1 US cup = 0.0625 US liquid gallons, and 1 US liquid gallon = 16 US cups.
Regional note. Gallons differ by region. A US liquid gallon is exactly 3.785411784 liters; an Imperial (UK) gallon is exactly 4.54609 liters — about 20% larger. This page uses the US liquid gallon.
Worked examples
- 2 US cups = 0.125 US liquid gallons — 2 ÷ 16 = 0.125 US liquid gallons
- 6 US cups = 0.375 US liquid gallons — 6 ÷ 16 = 0.375 US liquid gallons
- 10 US cups = 0.625 US liquid gallons — 10 ÷ 16 = 0.625 US liquid gallons
US cups to US liquid gallons conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| US cups (cup) | US liquid gallons (gal) |
|---|---|
| 1 cup | 0.0625 gal |
| 2 cup | 0.125 gal |
| 3 cup | 0.1875 gal |
| 4 cup | 0.25 gal |
| 5 cup | 0.3125 gal |
| 6 cup | 0.375 gal |
| 7 cup | 0.4375 gal |
| 8 cup | 0.5 gal |
| 9 cup | 0.5625 gal |
| 10 cup | 0.625 gal |
| 12 cup | 0.75 gal |
| 15 cup | 0.9375 gal |
| 20 cup | 1.25 gal |
| 25 cup | 1.5625 gal |
| 30 cup | 1.875 gal |
| 50 cup | 3.125 gal |
| 75 cup | 4.6875 gal |
| 100 cup | 6.25 gal |
| 500 cup | 31.25 gal |
| 1,000 cup | 62.5 gal |
When you need to convert US cups to US liquid gallons
- Scaling recipes between metric millilitres and US cups, pints or fluid ounces.
- Comparing fuel prices and tank capacities between countries.
- Working out paint, fertiliser or pool chemical quantities from instructions written for another market.
Getting a feel for the scale
A converted number is easier to trust when you can picture it. These reference points let you sanity-check the result at a glance.
US liquid gallon (gal)
- A US milk jug is 1 gallon
- A mid-size car tank holds 12–16 US gallons
Common mistakes to avoid
- Dividing when you should multiply. Because 1 US cup = 0.0625 US liquid gallons, the answer should be smaller than the number you started with.
- Mixing US and Imperial liquid measures. The Imperial gallon and pint are about 20% larger than their US counterparts, which is enough to ruin a recipe or misstate fuel economy.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
Cooking tolerates rounding to the nearest 5 mL or quarter cup. Dosing, chemistry and pool treatment do not — keep the full converted value there.
How these units are defined
- US cup (cup): 8 US fluid ounces, about 236.6 mL. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- US liquid gallon (gal): Exactly 3.785411784 liters — the gallon used in the United States. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
Frequently asked questions
- What is 1 US cup in US liquid gallons?
- 1 US cup is equal to 0.0625 US liquid gallons.
- How many US cups are in one US liquid gallon?
- There are 16 US cups in 1 US liquid gallon.
- How do you convert US cups to US liquid gallons?
- Multiply the number of US cups by 0.0625 — or use the formula gal = cup ÷ 16.
- What is 6 US cups in US liquid gallons?
- 6 US cups is 0.375 US liquid gallons. 6 ÷ 16 = 0.375 US liquid gallons.
- Is the US cups to US liquid gallons conversion exact?
- Yes. The relationship is fixed by definition, so 0.0625 is an exact conversion factor — only the displayed result is rounded.
- Does this use US or Imperial US liquid gallons?
- Gallons differ by region. A US liquid gallon is exactly 3.785411784 liters; an Imperial (UK) gallon is exactly 4.54609 liters — about 20% larger. This page uses the US liquid gallon.