840 ft ≈ 0.138246 nmi. To convert feet to nautical miles, multiply by 0.00016457883: 840 × 0.00016457883 = 0.138246.
How to convert feet to nautical miles
nmi = ft × 0.00016457883
- 1 ft = 0.00016457883 nmi (and 1 nmi = 6,076.1155 ft).
- Multiply the amount by the factor: 840 × 0.00016457883 = 0.138246.
- Answer: 840 ft ≈ 0.138246 nmi (rounded to 6 significant figures).
Feet to Nautical Miles table
| Feet (ft) | Nautical Miles (nmi) |
|---|---|
| 835 ft | 0.137423 nmi |
| 836 ft | 0.137588 nmi |
| 837 ft | 0.137752 nmi |
| 838 ft | 0.137917 nmi |
| 839 ft | 0.138082 nmi |
| 840 ft | 0.138246 nmi |
| 841 ft | 0.138411 nmi |
| 842 ft | 0.138575 nmi |
| 843 ft | 0.13874 nmi |
| 844 ft | 0.138905 nmi |
| 845 ft | 0.139069 nmi |
| ft | nmi |
|---|---|
| 1 ft | 0.000164579 nmi |
| 5 ft | 0.000822894 nmi |
| 10 ft | 0.00164579 nmi |
| 50 ft | 0.00822894 nmi |
| 100 ft | 0.0164579 nmi |
| 1,000 ft | 0.164579 nmi |
Good to know
1 inch = 2.54 cm exactly; 1 cm = 10 mm; 1 m = 100 cm; 1 foot = 12 inches = 30.48 cm.