Convert Cups (US) to Gallons (US)
One cup (US) equals 0.0625 gallons (us). Type any value to convert cups (us) to gallons (us) instantly — with a full reference table below.
Convert Cups (US) to Gallons (US)
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How to convert Cups (US) to Gallons (US)
To convert cups (us) to gallons (us), multiply by 0.0625. One cup (US) equals 0.0625 gal, and one gallon (US) equals 16 cup.
- Take the value in cups (us) — for example 7.5 cup.
- Multiply by 0.0625 (the number of gallons (us) in one cup (US)).
- 7.5 × 0.0625 = 0.46875 gal.
Quick mental estimate: Divide the number of cups (us) by 16 — that is exact.
Cups (US) to Gallons (US) conversion table
| Cups (US) | Gallons (US) |
|---|---|
| 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 |
| 8 cup | 0.5 gal |
| 10 cup | 0.625 gal |
| 12 cup | 0.75 gal |
| 16 cup | 1 gal |
| 20 cup | 1.25 gal |
| 24 cup | 1.5 gal |
| 32 cup | 2 gal |
| 50 cup | 3.125 gal |
| 100 cup | 6.25 gal |
| Gallons (US) | Cups (US) |
|---|---|
| 1 gal | 16 cup |
| 2 gal | 32 cup |
| 3 gal | 48 cup |
| 4 gal | 64 cup |
| 5 gal | 80 cup |
| 6 gal | 96 cup |
| 8 gal | 128 cup |
| 10 gal | 160 cup |
| 12 gal | 192 cup |
| 16 gal | 256 cup |
| 20 gal | 320 cup |
| 24 gal | 384 cup |
| 32 gal | 512 cup |
| 50 gal | 800 cup |
| 100 gal | 1,600 cup |
About converting Cups (US) to Gallons (US)
Cups (US) (cup) and Gallons (US) (gal) are both units of volume. The exact factor is 1 cup = 0.0625 gal, so multiply by 0.0625 to go from cups (us) to gallons (us) (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Gallons (US) to Cups (US) converter, or the full unit converter for every unit at once.
Real-world volume in cups (us) and gallons (us)
| Example | Cups (US) | Gallons (US) |
|---|---|---|
| A US soda can (12 fl oz) | 1.5 cup | 0.09375 gal |
| A wine bottle | 3.170065 cup | 0.198129 gal |
| A US gallon of milk | 16 cup | 1 gal |
| A typical car fuel tank | ≈ 211.3376 cup | ≈ 13.2086 gal |
| A typical bathtub | ≈ 634.0129 cup | ≈ 39.62581 gal |
“≈” marks typical values; the rest are defined or measured figures.
The units
The US customary cup: 1/16 US gallon, 236.5882365 mL. US nutrition labels use 240 mL; metric cups are 250 mL.
Used for: US recipes.
The US liquid gallon: 231 cubic inches, exactly 3.785411784 L. (The UK imperial gallon is larger: 4.54609 L.)
Used for: US fuel and milk.
US customary volumes are exact by definition: the US gallon is 231 cubic inches, which is exactly 3.785411784 litres.