Too bright, too dark—sometimes finding the “just right” feels all wrong. Luckily, we’ve got an easy formula for figuring out just how much light you need in any given room. First, think about the purpose of the room. Will you be reading there, dining, or mostly relaxing?
Then, learn the difference between illuminance (measured in lux) and light output (measured in lumens).
The lumen (LM) is a measurement unit describing how much light a lamp or fixture produces, while the lux (LX) is a measurement unit describing how much light covers a given surface area. One lux is equal to one lumen per square meter.
IESNA, the Illuminating Engineering Society of North America, provides recommended illuminance levels for all types of rooms. You can use these values to help find the appropriate amount of light for each space. The following are some examples:
- Kitchens: 300-750 lux
- Bathrooms: 100-300 lux
- Dining rooms: 200-300 lux
- Bedrooms: 200-300 lux