# Convert 15 mi to mm

So you want to convert 15 miles into millimeters? If you're in a rush and just need the answer, the calculator below is all you need. **The answer is 24140100 millimeters**.

## How to convert miles to millimeters

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 mi is equal to 1609340 mm.

Once you know what 1 mi is in millimeters, you can simply multiply 1609340 by the total miles you want to calculate.

So for our example here we have 15 miles. So all we do is multiply 15 by 1609340:

## What is the best conversion unit for 15 mi?

As an added little bonus conversion for you, we can also calculate the best unit of measurement for 15 mi.

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 15 mi the best unit of measurement is nautical miles, and the amount is 13.034611231102 nmi.**

## More unit conversions

Hopefully this has helped you to learn about how to convert 15 mi to mm. If you want to calculate more unit conversions, head back to our main unit converter and experiment with different conversions.