How can you calculate mileage when you travel?

One way to calculate mileage while on a trip is to take an odometer reading at the start of the trip, then take a reading at the end and subtract the smaller number from the larger. The result represents the mileage covered.

When planning travel, tools such as DistanceCalculator. Globefeed.com allow a user to input a start and end location. The mileage for several logical routes is then presented and the user selects a route. For drivers concerned about gas expenditure, a more detailed calculator such as the one at FuelEconomy.gov can help them find the most efficient routes and methods of driving.