Is this Recessed Lighting Calculator free to use?

Yes, Recessed Lighting Calculator is 100% free to use online with no installation or account required.

How do I use the Recessed Lighting Calculator?

Simply enter your values into the required input fields and click calculate to view the results instantly.

Yes, the calculator is fully responsive and compatible with Android, iOS, Windows, macOS, and Linux web browsers.

Recessed Lighting Calculator — Free Online Tool

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Calculate the number of recessed light fixtures and total lumens needed for your room

Lighting Formula: $\text{Total Lumens} = \text{Area (sq ft)} \times \text{Foot-Candles (Target)}$. Enter your room dimensions below.

Room & Lighting Parameters Input

Room Width (Feet)

Room Length (Feet)

Room Type / Activity

Lumens per Fixture (e.g., 800 lm)

⚠️ Spacing between recessed lights should typically be equal to roughly the height of the ceiling divided by two for even illumination.

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