Add Miles and Inches to Converter

[GetRighhttt]

I'm submitting a ...

• [] bug report
• [x] feature request

What is the current behavior?

Current behavior doe not include miles or inches.

What is the expected behavior?

Need to include miles and inches.

What is the motivation / use case for changing the behavior?

More conversions for more usage.

[GetRighhttt]

Also additionally added in kilometers.