Kilometer to Fathom Converter
Convert Kilometer (km) to Fathom (ftm) instantly. 1 km = 546.806649 ftm.
Length Converter
31 units available
1 km = 546.806649 ftm
Formula:
ftm = km × 546.8066491689With your value: 1 km = 546.80664917 ftm
How big is that?
Everyday references on a logarithmic scale, all expressed in kilometer so you can sanity-check the result.
Other Kilometer to Fathom conversions
Kilometer to Fathom Conversion Table
| Kilometer (km) | Fathom (ftm) |
|---|---|
| 0.5 | 273.403325 |
| 1 | 546.806649 |
| 2 | 1,093.613298 |
| 5 | 2,734.033246 |
| 10 | 5,468.066492 |
| 15 | 8,202.099738 |
| 20 | 10,936.132983 |
| 25 | 13,670.166229 |
| 50 | 27,340.332458 |
| 100 | 54,680.664917 |
| 250 | 136,701.662292 |
| 500 | 273,403.324584 |
| 1000 | 546,806.649169 |
Fathom to Kilometer Conversion Table
| Fathom (ftm) | Kilometer (km) |
|---|---|
| 0.5 | 0.000914 |
| 1 | 0.001829 |
| 2 | 0.003658 |
| 5 | 0.009144 |
| 10 | 0.018288 |
| 15 | 0.027432 |
| 20 | 0.036576 |
| 25 | 0.04572 |
| 50 | 0.09144 |
| 100 | 0.18288 |
| 250 | 0.4572 |
| 500 | 0.9144 |
| 1000 | 1.8288 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Kilometer (km)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Fathom (ftm)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Kilometer to Fathom
To convert from Kilometer (km) to Fathom (ftm), multiply the value by 546.8066491689.
Formula: ftm = km × 546.8066491689
Reverse: km = ftm × 0.0018288
Step-by-Step Example
- Start with your value in Kilometer. For example: 5 km
- Multiply by the conversion factor: 5 x 546.8066491689
- The result is: 2,734.033246 ftm
About Kilometer
The kilometer equals 1,000 meters and is the standard unit for measuring distances between geographical locations in most countries.
Fun Fact: The circumference of Earth is approximately 40,075 km.
Common uses: road distances, geography, running.
About Fathom
The fathom equals 6 feet (1.8288 m) and is the traditional unit for water depth on nautical charts.
Fun Fact: The word comes from the Old English "fæðm", the span of a man's outstretched arms.
Common uses: sounding depth, nautical charts, diving.
Frequently Asked Questions
How many Fathom are in 1 Kilometer?
There are exactly 546.8066491689 Fathom in 1 Kilometer. This means the conversion factor from Kilometer to Fathom is 546.8066491689.
What is the formula to convert Kilometer to Fathom?
The formula to convert Kilometer to Fathom is: ftm = km × 546.8066491689. For example, to convert 10 Kilometer to Fathom, you would multiply 10 by 546.8066491689.
What is a Kilometer?
The kilometer equals 1,000 meters and is the standard unit for measuring distances between geographical locations in most countries.
What is a Fathom?
The fathom equals 6 feet (1.8288 m) and is the traditional unit for water depth on nautical charts.
What are the common uses of Kilometer?
The Kilometer is commonly used in road distances, geography, running.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Kilometer to Fathom converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/kilometer-to-fathom