An augmented reality-based lighting design method includes displaying, by an augmented reality device, a real-time image of a target physical area on a display screen. The method further includes displaying, by the augmented reality device, a lighting fixture 3-D model on the display screen in response to a user input, wherein the lighting fixture 3-D model is overlaid on the real-time image of the target physical area. The method also includes determining, by the augmented reality device, illuminance values for locations in the target physical area, where the illuminance values indicate illuminance levels of a light to be provided by a lighting fixture represented by the lighting fixture 3-D model. The method further includes displaying, by the augmented reality device, the illuminance values on the display screen overlaid on the real-time image of the target physical area.