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US Liquid Gallons to US Cups Converter

Convert US liquid gallons to US cups instantly with this free US liquid gallons to US cups 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 liquid gallon in US cups?

1 US liquid gallon is equal to exactly 16 US cups.

1 × 16 = 16 US cups

Result16

1 US liquid gallon = 16 US cups

US liquid gallons to US cups formula

cup = gal × 16

The US liquid gallons to US cups conversion factor is 16, which is exact by definition. 1 US liquid gallon = 16 US cups, and 1 US cup = 0.0625 US liquid gallons.

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 liquid gallons = 32 US cups — 2 × 16 = 32 US cups
  • 6 US liquid gallons = 96 US cups — 6 × 16 = 96 US cups
  • 10 US liquid gallons = 160 US cups — 10 × 16 = 160 US cups

US liquid gallons to US cups conversion table

Every value below is calculated with the exact conversion factor and rounded for display.

US liquid gallons to US cups conversion table
US liquid gallons (gal)US cups (cup)
1 gal16 cup
2 gal32 cup
3 gal48 cup
4 gal64 cup
5 gal80 cup
6 gal96 cup
7 gal112 cup
8 gal128 cup
9 gal144 cup
10 gal160 cup
12 gal192 cup
15 gal240 cup
20 gal320 cup
25 gal400 cup
30 gal480 cup
50 gal800 cup
75 gal1,200 cup
100 gal1,600 cup
500 gal8,000 cup
1,000 gal16,000 cup

When you need to convert US liquid gallons to US cups

  • 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 liquid gallon = 16 US cups, the answer should be larger 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 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.
  • 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.

Related conversions

Frequently asked questions

What is 1 US liquid gallon in US cups?
1 US liquid gallon is equal to 16 US cups.
How many US liquid gallons are in one US cup?
There are 0.0625 US liquid gallons in 1 US cup.
How do you convert US liquid gallons to US cups?
Multiply the number of US liquid gallons by 16 — or use the formula cup = gal × 16.
What is 6 US liquid gallons in US cups?
6 US liquid gallons is 96 US cups. 6 × 16 = 96 US cups.
Is the US liquid gallons to US cups conversion exact?
Yes. The relationship is fixed by definition, so 16 is an exact conversion factor — only the displayed result is rounded.
Does this use US or Imperial US cups?
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.