# Convert 642 ft-us to fm

So you want to convert 642 us survey feet into fathoms? If you're in a rush and just need the answer, the calculator below is all you need. The answer is 107.00021400043 fathoms.

## How to convert us survey feet to fathoms

We all use different units of measurement every day. Whether you're in a foreign country and need to convert the local imperial units to metric, or you're baking a cake and need to convert to a unit you are more familiar with.

Luckily, converting most units is very, very simple. In this case, all you need to know is that 1 ft-us is equal to 0.16666700000067 fm.

Once you know what 1 ft-us is in fathoms, you can simply multiply 0.16666700000067 by the total us survey feet you want to calculate.

So for our example here we have 642 us survey feet. So all we do is multiply 642 by 0.16666700000067:

642 x 0.16666700000067 = 107.00021400043

## What is the best conversion unit for 642 ft-us?

As an added little bonus conversion for you, we can also calculate the best unit of measurement for 642 ft-us.

What is the "best" unit of measurement? To keep it simple, let's say that the best unit of measure is the one that is the lowest possible without going below 1. The reason for this is that the lowest number generally makes it easier to understand the measurement.

For 642 ft-us the best unit of measurement is fathoms, and the amount is 107.00021400043 fm.