ZipMath performs distance calculations based on zipcodes. Calculate the distance between zipcodes or cities. List all the zipcodes in a circle or rectangle. Find the zipcode of a city or the city of a zipcode. List all the zipcodes in a City, County or Area Code. Define 'Cost per mile' and calculate shipping cost between locations. Database Interface: Find the nearest 'n' locations from an external ASCII list or from any database with an ODBC Interface. Any command can be executed interactively or in batch mode. In batch mode input is taken from an external file and permits processing lists of zipcodes, cities, etc. with one command. Programmable output format and record selection. Zipcode database with geographical coordinates included. Automated database updates available from the website. Main applications include calculating distances and shipping cost, ordering your contacts based on proximity to a zipcode or city, lookup zipcodes, cities or area codes.