Total lumens and number of LED bulbs a room needs for the right brightness.
How this works
Lumens = recommended lux x floor area (m²). Typical lux: bedroom 150, living room 150, dining 200, bathroom 300, kitchen 300, home office 500, hallway 100. Dark walls absorb light, so add 15 to 30%. Ceilings over 3 m add 10% per extra half metre.
Questions people ask
How do I use the Lumens Needed for a Room tool?
Fill in the fields, starting with “Room type”, “Room length” and “Room width”, and change any other options that match your home. The answer, a drawing and practical tips update as you type, and the Copy link button saves your numbers in a link you can share.
Is the Lumens Needed for a Room tool free?
Yes. The Lumens Needed for a Room tool is free, with no sign-up, and works on phones, tablets and computers. The results are estimates to help you plan, so check with a qualified professional before structural, electrical, gas or plumbing work.