You must give more attention for determining a Chandelier. If your room is less than 100 meters square you should use a chandelier with has diameter about 18",19” 20". If your room has 144 meters square so you can use the chandelier with diameter about 26" 27". And if you have a room approximately 196 meters square the chandelier that you use should be about 25", 26”, 27”, 28”, 29”, 30”, 31” 32". Ideas & Inspirations.