21 ft³ ≈ 2,092.89 cup (Imperial; in US cups: 21 ft³ = 2,513.45 US cup). To convert cubic feet to cups, multiply by 99.661376: 21 × 99.661376 = 2,092.89.
How to convert cubic feet to cups
cup = ft³ × 99.661376
- 1 ft³ = 99.661376 cup (and 1 cup = 0.010033977 ft³).
- Multiply the amount by the factor: 21 × 99.661376 = 2,092.89.
- Answer: 21 ft³ ≈ 2,092.89 cup (rounded to 6 significant figures).
Cubic Feet to Cups table
| Cubic Feet (ft³) | Cups (cup) |
|---|---|
| 16 ft³ | 1,594.58 cup |
| 17 ft³ | 1,694.24 cup |
| 18 ft³ | 1,793.9 cup |
| 19 ft³ | 1,893.57 cup |
| 20 ft³ | 1,993.23 cup |
| 21 ft³ | 2,092.89 cup |
| 22 ft³ | 2,192.55 cup |
| 23 ft³ | 2,292.21 cup |
| 24 ft³ | 2,391.87 cup |
| 25 ft³ | 2,491.53 cup |
| 26 ft³ | 2,591.2 cup |
| ft³ | cup |
|---|---|
| 1 ft³ | 99.6614 cup |
| 5 ft³ | 498.307 cup |
| 10 ft³ | 996.614 cup |
| 50 ft³ | 4,983.07 cup |
| 100 ft³ | 9,966.14 cup |
| 1,000 ft³ | 99,661.4 cup |
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: 21 ft³ = 2,513.45 US cup.