Provided is an indoor location measuring method and apparatus. The indoor location measuring apparatus that measures a location of a communication terminal within a building by determining a floor where the communication terminal is located may include a floor classifying means for classifying information relating to a plurality of access points (APs) and collected by the communication terminal for each floor, and a location determining means for assigning a grade constant to each item of AP information classified for each floor based on the signal intensity included in the AP information, and for calculating the sum of the grade constants for each floor, and for determining a floor having the largest sum as a location of the communication terminal.