# Convert 5 in² to km²

So you want to convert 5 square inches into square kilometers? If you're in a rush and just need the answer, the calculator below is all you need. The answer is 3.2257965E-9 square kilometers.

## How to convert square inches to square kilometers

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 in² is equal to 6.451593E-10 km².

Once you know what 1 in² is in square kilometers, you can simply multiply 6.451593E-10 by the total square inches you want to calculate.

So for our example here we have 5 square inches. So all we do is multiply 5 by 6.451593E-10:

5 x 6.451593E-10 = 3.2257965E-9

## What is the best conversion unit for 5 in²?

As an added little bonus conversion for you, we can also calculate the best unit of measurement for 5 in².

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 5 in² the best unit of measurement is square inches, and the amount is 5 in².