Surface-Mounted Luminaire Calculator
Calculate how many surface-mounted spots or cylinders a space without a suspended ceiling needs: quantity, layout, average lux, power and a 3D view.
1. Space and dimensions
2. Product
3. Quantity and layout
Drag luminaires (and tracks for track spots) on the plan view to move them.
4. Request a quote
Result
- Luminaires
- 4 (2 × 2)
- Total power
- 40 W
- Area
- 24 m²
Bill of materials
| Item | Code | Qty |
|---|---|---|
| Colonna 85 · 10 W · 250 mA · 4000K | 10 01 IC SU 005-10-840 | 4 |
The quantity is calculated from the illuminance target of the space type (EN 12464-1) and the product's power and lumen data. This is a preliminary design; we prepare a DIALux design for the final layout.
How is it calculated?
- Choosing the type of space fills in the EN 12464-1 illuminance target and maintenance factor.
- The lumen method is applied with the product's power and lumen data, the room size and ceiling height; the quantity is laid out evenly in columns × rows.
- With automatic power, the variant that keeps the spacing best suited to the mounting height is chosen. You can change the power and the layout yourself.
- The result is a preliminary design; we prepare a DIALux design for the final layout and light distribution.
Frequently asked questions
When are surface-mounted luminaires used?
On concrete or decorative ceilings, in refurbishments and industrial-style interiors where a suspended ceiling is not possible. The lighting calculation is the same as for recessed luminaires.
Is the quantity final?
It is a preliminary estimate. The lumen method gives the average illuminance; the exact distribution with furniture, columns and windows is confirmed in a DIALux calculation.
How do I request a quote?
Send the result by e-mail with the form on the page, or send the bill of materials as a WhatsApp message.