I have address stored in an excel spreadsheet. One address per row. I want to buy or develop a function which would compute, in miles the driving distance between 2 addresses. Typical use is to computen the distance between a Subject address and multiple destinations, all in one spreadsheet.
I found a company which produces an addin fucntion for Excel which computers distance between Zip codes. However this isn't accurate enough. I need the distance between exact addresses (house #, street address, city, state, Zip).
Any ideas how to provide this functionality?