Convert 21 Feet to Fathoms
How long is 21 feet? How far is 21 feet in fathoms? 21 ft to fathoms conversion.
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21 Feet =
3.5 Fathoms
exact result
Decimal places
Result in Plain English
21 feet is equal to exactly 3 and a 1⁄2 fathoms.
Result as a Fraction
21 feet
= 7⁄2 fathoms
= 3 and 1⁄2 fathoms
In Scientific Notation
21 feet
= 2.1 x 101 feet
= 3.5 x 100 fathoms