Using Coordinates For Placemarkers

In the Information Window of Your Project:

• Click, "More Settings"

• Under "Placemark Placement," enter latitude and longitude

How to Enter Latitude and Longitude

You can use the following:

• Decimal Degrees (DDD): Set in the "degree" coordinate.
  Example: 49.11675953666N

• Degrees, Minutes, and Seconds (DMS): Decimal precision is set in the "seconds" coordinate.
  Example: 49 7'20.06"N

• Degrees, Minutes with Decimal Seconds (DMM): Decimal precision is set in the "minutes" coordinate. Example: 49 7.0055722"N. (Here, 20.06 seconds above is divided by 3600 to get the decimal minute value for 20.06 seconds.)

Separate coordinates with a space:

• DMS example: 37 24 23.3

• DMM example: 49 7.0055722

Use a single quote for minutes and a double quote for seconds:

Example: 49 7'20.06"

Direction notation (North/South, East/West):

Use N, S, E, or W to indicate direction.

Example: N 37 24 23.3 or 37 24 23.3 N

Use the minus sign (-) for western or southern positions: When you use this, do not specify a letter.

Example: 37 25 19.07, -122 05 08.40
Note: Don’t use a plus sign (+) for northerly/easterly directions.

Latitude first, longitude second: Unless you use a direction notation (N, S, E, or W), enter latitude before longitude.

Example: 122 05 08.40 W 37 25 19.07 N or 37 25 19.07, 122 05 08.40

Separate pairs with a space, a comma, or slash:

• 37.7 N 122.2 W

• 37.7 N,122.2 W

• 37.7 N/122.2 W

Information above taken from "Google Earth Help"