Last Updated Jan 3, 2011 10:51 AM EST
Travelmath is a site with a dozen travel calculators, each designed to help with a different aspect of planning a trip. As I mentioned, you can enter a city and the site will tell you the closest airport. But it does much more. You can also find the driving time between two locations as well as get the estimated fuel cost if you drive (you can fine-tune the total by entering a specific cost per gallon). Want to know what airlines travel to a particular city? Travelmath can tell you that too. And that's just a few of its many abilities.
The site is free, requires no registration, and using it is fast and effortless -- so it's a handy resource to help plan a trip. Every calculation provides a wealth of additional related information as well, such as a Google map packed with related points of interest. [via Lifehacker]