Edison Lighting Calculator Edison Lighting Calculator Use the Edison Lighting Calculator to see how many fixtures your room will require. Room Cavity Ratio Measure the width and length of the room area.
All measurements require a decimal number and are assumed to be in feet.
Lamp Choice Select the fixture you will be using. Fixture Coefficiency Select the type of lamp you are using. PAR38 26W CF 50W MR16 Desired Foot Candles Select the type of room to automatically calculate the desired amount of light in 'foot candles'.