4 ft ≈ 0.666667 fm. To convert feet to fathoms, divide by 6: 4 ÷ 6 = 0.666667.
How to convert feet to fathoms
fm = ft × 0.16666667
- 1 ft = 0.16666667 fm (and 1 fm = 6 ft).
- Multiply the amount by the factor: 4 × 0.16666667 = 0.666667.
- Answer: 4 ft ≈ 0.666667 fm (rounded to 6 significant figures).
Shortcut: dividing by 6 gives the same result as multiplying by 0.16666667.
Feet to Fathoms table
| Feet (ft) | Fathoms (fm) |
|---|---|
| 1 ft | 0.166667 fm |
| 2 ft | 0.333333 fm |
| 3 ft | 0.5 fm |
| 4 ft | 0.666667 fm |
| 5 ft | 0.833333 fm |
| 6 ft | 1 fm |
| 7 ft | 1.1667 fm |
| 8 ft | 1.3333 fm |
| 9 ft | 1.5 fm |
| 10 ft | 1.6667 fm |
| 11 ft | 1.8333 fm |
| ft | fm |
|---|---|
| 1 ft | 0.166667 fm |
| 5 ft | 0.833333 fm |
| 10 ft | 1.6667 fm |
| 50 ft | 8.3333 fm |
| 100 ft | 16.6667 fm |
| 1,000 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.