# How to Calculate Air Miles

If you are a frequent flier, then it is in your interest that you calculate your air miles. This article shares some tips on how you could go about doing the same.

Omkar Phatak

*air miles reward programs*, as an incentive to frequent fliers.

Air Vs. Land Miles

There is one big difference in calculating air and land miles. The difference obviously arises out of the fact that planes fly and cars are driven on roads. Planes need not wind around obstructions like lakes and mountains. Roads keep winding around, which makes distance calculation difficult. That is why, calculating air miles is simpler than calculating road miles and both have different ways and units of measurement. Google maps can calculate road miles for you online.

Units

The unit used to compute air miles is the 'International Nautical Mile'. One international nautical mile is a distance of 1852 meters. The origin of this unit is in the fact that one such mile is the distance spanned across one arc minute of latitude, along a meridian. This is different from the geographical mile, that is normally used as a unit of length.

Calculation

There are many ways of calculating air miles. One way, is to actually gather all the data related to your journey and calculate the distance on your own. This will involve getting information about the flight path and exact coordinates of the airports, which will be your departure and arrival points. Using a scaled map like the Mercator's map and using the Rhumb line (great circle) method, you can compute international nautical miles.

**Webflyer**', which can give you an answer, at the click of a mouse. All you need to do is enter information about your initial and final destinations and it will compute the miles between those two cities.