---
title: "Feet to Fathoms — ft to ftm converter"
description: "1 foot = 0.16667 fathoms. Convert feet to fathoms with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/feet-to-fathoms/
site: "At One Place"
---

# Feet to fathoms

**1 foot in fathoms: 1 ft = 0.16667 ftm**

ftm = ft × 1/6

To convert feet to fathoms, multiply by 0.1666666667. The table below gives the values people look up most often, and the converter works for any number.

## Feet to fathoms table

*Common foot values converted to fathoms.*

| Feet | Fathoms |
| --- | --- |
| 1 ft | 0.16667 |
| 2 ft | 0.33333 |
| 3 ft | 0.5 |
| 4 ft | 0.66667 |
| 5 ft | 0.83333 |
| 10 ft | 1.666667 |
| 15 ft | 2.5 |
| 20 ft | 3.333333 |
| 25 ft | 4.166667 |
| 30 ft | 5 |
| 40 ft | 6.666667 |
| 50 ft | 8.333333 |
| 75 ft | 12.5 |
| 100 ft | 16.66667 |
| 250 ft | 41.66667 |
| 500 ft | 83.33333 |
| 1,000 ft | 166.6667 |

## How the conversion works

The relationship is ftm = ft × 1/6. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

> Foot: Plural is "feet".

## Common questions

### How many fathoms are in one foot?

One foot equals 0.16667 fathoms. ftm = ft × 1/6.

### How do you convert feet to fathoms?

Use ftm = ft × 1/6. So 10 ft is 1.666667 ftm.

### How many feet are in one fathom?

One fathom equals 6 feet, which is the reverse of the conversion above.

### Is there more than one kind of foot?

Plural is "feet".

## Related pages

- [Fathoms to Feet](https://atoneplace.net/convert/fathoms-to-feet/)
- [Feet to Meters](https://atoneplace.net/convert/feet-to-meters/)
- [Feet to Kilometers](https://atoneplace.net/convert/feet-to-km/)
- [Feet to Centimeters](https://atoneplace.net/convert/feet-to-cm/)
- [Feet to Millimeters](https://atoneplace.net/convert/feet-to-mm/)
- [Feet to Miles](https://atoneplace.net/convert/feet-to-miles/)
- [Feet to Yards](https://atoneplace.net/convert/feet-to-yards/)
- [Feet to Inches](https://atoneplace.net/convert/feet-to-inches/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)