# Convert 21 fm to km

In this article I will show you how to convert 21 fathoms into kilometers. Throughout the explanation below I might also call it 21 fm to km. They are the same thing!

## How to Convert Fathoms to Kilometers

A fathom is smaller than a kilometer. I know that a fm is smaller than a km because of something called conversion factors.

Put very simply, a conversion factor is a number that can be used to change one set of units to another, by multiplying or dividing it. So when we need to convert 21 fathoms into kilometers, we use a conversion factor to get the answer.

The conversion factor for fm to km is:

1 fm = 0.0018288 km

Now that we know what the conversion factor is, we can easily calculate the conversion of 21 fm to km by multiplying `0.0018288` by the number of fathoms we have, which is 21.

21 x 0.0018288 = 0.0384048 km

So, the answer to the question "what is 21 fathoms in kilometers?" is 0.0384048 km.

## Fathoms to Kilometers Conversion Table

Below is a sample conversion table for fm to km:

Fathoms (fm) Kilometers (km)
0.010
0.10
10
20
30.01
50.01
100.02
200.04
500.09
1000.18
10001.83

## Best Conversion Unit for 21 fm

Sometimes when you work with conversions from one unit to another, the numbers can get a little confusing. Especially when dealing with really large numbers.

I've also calculated what the best unit of measurement is for 21 fm.

To determine which unit is best, I decided to define that as being the unit of measurement which is as low as possible, without going below 1. Smaller numbers are more easily understood and can make it easier for you to understand the measurement.

The best unit of measurement I have found for 21 fm is fathoms and the amount is 21 fm.

## Link to Us / Reference this Page

Please use the tool below to link back to this page or cite/reference us in anything you use the information for. Your support helps us to continue providing content!

• "Convert 21 fm to km". WorksheetGenius.com. Accessed on April 24, 2024. http://worksheetgenius.com/unit-converter/convert-21-fm-to-km/.

• "Convert 21 fm to km". WorksheetGenius.com, http://worksheetgenius.com/unit-converter/convert-21-fm-to-km/. Accessed 24 April, 2024

• Convert 21 fm to km. WorksheetGenius.com. Retrieved from http://worksheetgenius.com/unit-converter/convert-21-fm-to-km/.