18 US survey ft ≈ 3 fm. To convert us survey feet to fathoms, multiply by 0.166667: 18 × 0.166667 = 3.
How to convert us survey feet to fathoms
fm = US survey ft × 0.166667
- 1 US survey ft = 0.166667 fm (and 1 fm = 5.999988 US survey ft).
- Multiply the amount by the factor: 18 × 0.166667 = 3.
- Answer: 18 US survey ft ≈ 3 fm (rounded to 6 significant figures).
US Survey Feet to Fathoms table
| US Survey Feet (US survey ft) | Fathoms (fm) |
|---|---|
| 13 US survey ft | 2.1667 fm |
| 14 US survey ft | 2.3333 fm |
| 15 US survey ft | 2.5 fm |
| 16 US survey ft | 2.6667 fm |
| 17 US survey ft | 2.8333 fm |
| 18 US survey ft | 3 fm |
| 19 US survey ft | 3.1667 fm |
| 20 US survey ft | 3.3333 fm |
| 21 US survey ft | 3.5 fm |
| 22 US survey ft | 3.6667 fm |
| 23 US survey ft | 3.8333 fm |
| US survey ft | fm |
|---|---|
| 1 US survey ft | 0.166667 fm |
| 5 US survey ft | 0.833335 fm |
| 10 US survey ft | 1.6667 fm |
| 50 US survey ft | 8.3334 fm |
| 100 US survey ft | 16.6667 fm |
| 1,000 US survey ft | 166.667 fm |
Good to know
1 inch = 2.54 cm exactly; 1 cm = 10 mm; 1 m = 100 cm; 1 foot = 12 inches = 30.48 cm.