A lumen has a brightness equal to one candle; therefore, a 1500-lumen LED bulb means the 1,500 candles were lit in a single room. The 1500 lumens are considered best for the halogen lights. These are the ideal choices for outdoor lights because they provide the best brightness with low energy consumption.

A lumen measures the amount of light that comes from a bulb, also known as light bulb brightness. A standard 40W bulb is equal to 400+ lumens, which represents the brightness of a bulb. Typically, the higher the wattage, the higher the lumens, and the greater output of light.

As a handy rule of thumb, a sitting room or bedroom will generally require around 10-20 lumens per square foot, while a bathroom or kitchen will need a stronger level of lighting, at around 70-80 lumens per square foot. To work out the lumens you need, simply multiply the square footage of the room by this figure.