In a big city and want to know what your cab fare will be before you even hail the taxi? Then check out Bing’s Taxi Fare Calculator.
Select the region for which you’re searching. Since city cabs are usually regulated, Bing has a good idea of what the charge per mile will be. Enter your starting point and destination and you will get a map of the quickest route, along with a itemized list of what you may be charged for (initial fee, milage, waiting time).
I tried out a few routes that I’ve taken before in a taxi, and the cost seems spot on. Give it a go and let me know how accurate the fares are!