18 cup ≈ 1.125 gal (Imperial; in US gallons: 18 cup = 1.3511 US gal). To convert cups to gallons, multiply by 0.062499995: 18 × 0.062499995 = 1.125.
How to convert cups to gallons
gal = cup × 0.062499995
- 1 cup = 0.062499995 gal (and 1 gal = 16.000001 cup).
- Multiply the amount by the factor: 18 × 0.062499995 = 1.125.
- Answer: 18 cup ≈ 1.125 gal (rounded to 6 significant figures).
Cups to Gallons table
| Cups (cup) | Gallons (gal) |
|---|---|
| 13 cup | 0.8125 gal |
| 14 cup | 0.875 gal |
| 15 cup | 0.9375 gal |
| 16 cup | 1 gal |
| 17 cup | 1.0625 gal |
| 18 cup | 1.125 gal |
| 19 cup | 1.1875 gal |
| 20 cup | 1.25 gal |
| 21 cup | 1.3125 gal |
| 22 cup | 1.375 gal |
| 23 cup | 1.4375 gal |
| cup | gal |
|---|---|
| 1 cup | 0.0625 gal |
| 5 cup | 0.3125 gal |
| 10 cup | 0.625 gal |
| 50 cup | 3.125 gal |
| 100 cup | 6.25 gal |
| 1,000 cup | 62.5 gal |
Good to know
The cup here is the Imperial (UK) cup: 1 cup = 0.28413 L. A US cup is 0.236588 L.
In US cups: 18 US cup = 0.936759 gal.
The gal here is the Imperial (UK) gallon: 1 gal = 4.54609 L. A US gallon is 3.78541 L.
In US gallons: 18 cup = 1.3511 US gal.