5.1 ft = 0.85 fm. To convert feet to fathoms, divide by 6: 5.1 ÷ 6 = 0.85.
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: 5.1 × 0.16666667 = 0.85.
- Answer: 5.1 ft = 0.85 fm.
Shortcut: dividing by 6 gives the same result as multiplying by 0.16666667.
Feet to Fathoms table
| Feet (ft) | Fathoms (fm) |
|---|---|
| 4.6 ft | 0.766667 fm |
| 4.7 ft | 0.783333 fm |
| 4.8 ft | 0.8 fm |
| 4.9 ft | 0.816667 fm |
| 5 ft | 0.833333 fm |
| 5.1 ft | 0.85 fm |
| 5.2 ft | 0.866667 fm |
| 5.3 ft | 0.883333 fm |
| 5.4 ft | 0.9 fm |
| 5.5 ft | 0.916667 fm |
| 5.6 ft | 0.933333 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.