If you are collecting latitude and longitude of various places then you can use Google Maps or Bing maps to determine lat/long co-ordinates.
Step 1: Open maps.google.com in a Internet browser.
Step 2: Type in the location in Google Search field.
In the above example, we are trying to locate Chennai Egmore using Google Maps.
Step 3: Right click on the location and select What’s here? from the menu list.
This should display the latitude and longitude in the search text box as shown below.
Step 1: Open Bing Maps in Internet Browser.
Step 2: Type the location in Search Text box.
Step 3: Navigate to that location on the Map then right click on the location. This should display the latitude and longitude of the selected location as shown below.