840 ft = 10,080 in. To convert feet to inches, multiply by 12: 840 × 12 = 10,080.
How to convert feet to inches
in = ft × 12
- 1 ft = 12 in (and 1 in = 0.083333333 ft).
- Multiply the amount by the factor: 840 × 12 = 10,080.
- Answer: 840 ft = 10,080 in.
Feet to Inches table
| Feet (ft) | Inches (in) |
|---|---|
| 835 ft | 10,020 in |
| 836 ft | 10,032 in |
| 837 ft | 10,044 in |
| 838 ft | 10,056 in |
| 839 ft | 10,068 in |
| 840 ft | 10,080 in |
| 841 ft | 10,092 in |
| 842 ft | 10,104 in |
| 843 ft | 10,116 in |
| 844 ft | 10,128 in |
| 845 ft | 10,140 in |
| ft | in |
|---|---|
| 1 ft | 12 in |
| 5 ft | 60 in |
| 10 ft | 120 in |
| 50 ft | 600 in |
| 100 ft | 1,200 in |
| 1,000 ft | 12,000 in |
Good to know
1 inch = 2.54 cm exactly; 1 cm = 10 mm; 1 m = 100 cm; 1 foot = 12 inches = 30.48 cm.