# Convert 686 ft-us to km

In this article I will show you how to convert 686 us survey feet into kilometers. Throughout the explanation below I might also call it 686 ft-us to km. They are the same thing!

## How to Convert Us survey feet to Kilometers

A us survey foot is smaller than a kilometer. I know that a ft-us 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 686 us survey feet into kilometers, we use a conversion factor to get the answer.

The conversion factor for ft-us to km is:

1 ft-us = 0.00030480060960122 km

Now that we know what the conversion factor is, we can easily calculate the conversion of 686 ft-us to km by multiplying `0.00030480060960122` by the number of us survey feet we have, which is 686.

686 x 0.00030480060960122 = 0.20909321818644 km

So, the answer to the question "what is 686 us survey feet in kilometers?" is 0.20909321818644 km.

## Us survey feet to Kilometers Conversion Table

Below is a sample conversion table for ft-us to km:

Us survey feet (ft-us) Kilometers (km)
0.010
0.10
10
20
30
50
100
200.01
500.02
1000.03
10000.3

## Best Conversion Unit for 686 ft-us

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 686 ft-us.

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 686 ft-us is fathoms and the amount is 114.33356200046 fm.