Room Lighting Calculator
How many lights do I need for a room?
This calculator gives you a rough guide to how many lights may be suitable for a room. The calculation is based on room size, room type and the luminous flux per light in lumens.
Please note: This calculator is not a substitute for professional lighting design. The actual lighting requirement may vary depending on beam characteristics, luminaire positioning, wall colours and furnishings.
Room calculator
Result
The calculation is intended as a rough guide. For more precise planning, factors such as luminaire position, beam angle, light distribution and furnishings also play a role.
Typical illuminance values by room
| Room | Recommended value | Note |
|---|---|---|
| Living room | approx. 150–200 Lux | Comfortable general lighting for living and relaxing |
| Dining room | approx. 150–250 Lux | A good general lighting level, often complemented by a pendant above the table |
| Hallway | approx. 100–150 Lux | Sufficient for orientation and everyday use |
| Bedroom | approx. 120–180 Lux | Calm general lighting with a comfortable atmosphere |
| Kitchen | approx. 250–350 Lux | Good visibility for everyday use; work areas often benefit from additional lighting |
| Bathroom | approx. 250–350 Lux | General room lighting; mirror areas should usually be considered separately |
| Office / home office | approx. 400–500 Lux | Suitable for focused work |
Would you like a more precise plan?
We are happy to assist you with individual lighting planning. A more detailed assessment is particularly worthwhile for open-plan living areas, kitchens, bathrooms and workspaces.






