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Gallons to Cups Converter

Convert gallons to cups and cups to gallons instantly. Bidirectional volume converter with formula and common values.

gal

Cups

24

cup

1.5 gal = 24 cup

cup = gal × 16

Gallons to Cups: 1 gal equals 16 cup. To convert gallons to cups, multiply by 16 (cup = gal × 16). For example, 10 gal = 160 cup.

How to Convert Gallons to Cups

To convert from gallons to cups, multiply the value by 16. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Gallons to Cups: cup = gal × 16
  • Cups to Gallons: gal = cup ÷ 16

Gallons to Cups Conversion Chart

Gallons (gal)Cups (cup)
0.11.6
0.254
0.58
116
232
348
580
10160
20320
25400
50800
1001600
2504000
100016000

Understanding the Units

What is a Gallon?

The US liquid gallon equals exactly 3.785411784 liters; the imperial (UK) gallon equals 4.54609 liters.

From the Old Northern French galun, originally a wine measure.

Common contexts: fuel, milk, paint.

What is a Cup?

The US legal cup equals exactly 240 milliliters; the US customary cup used in recipes is 236.5882365 milliliters.

Common contexts: cooking (US).

Real-World Reference Points

Item Gallons (gal) Cups (cup)
A milk jug (US)116
Average car gas tank (US)14224

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FAQ

How many cups are in a gallon?

One US gallon equals exactly 16 US cups.

How do I convert gallons to cups?

Multiply the number of gallons by 16. For example, 1.5 gallons × 16 = 24 cups.

How many cups in a half gallon?

A half gallon contains 8 cups.

Why are there 16 cups in a gallon?

A gallon has 4 quarts, each quart has 2 pints, and each pint has 2 cups. So 4 × 2 × 2 = 16 cups per gallon.

How many cups are in 1 gallon?

1 gal equals 16 cup.

How do you convert gallons to cups?

Multiply the gallon value by 16. Formula: cup = gal × 16.

How many cups are in 5 gallons?

5 gal = 80 cup.

How do you convert cups back to gallons?

Use the inverse formula: gal = cup ÷ 16. For example, 1 cup = 0.0625 gal.

What is the difference between Gallon and Cup?

The US liquid gallon equals exactly 3.785411784 liters; the imperial (UK) gallon equals 4.54609 liters. The US legal cup equals exactly 240 milliliters; the US customary cup used in recipes is 236.5882365 milliliters.