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Pot Light Spacing Calculator

Estimate recessed light spacing, fixture count, lumens, wall offset, and room layout in imperial or metric units.

Inputs

Choose a room type and fixture size, then fine-tune the layout if needed.

Layout Adjustments

Optional. Leave blank for auto layout, or enter a fixture count, number of columns, number of rows, or a combination.

Results

Recommended Layout
0 x 0
Total Fixtures
0
Estimated Lumens Needed
0 lm
Suggested Lumens Per Fixture
0 lm
Spacing Along Length
0.0 ft
Spacing Along Width
0.0 ft
End Wall Offset
0.0 ft
Side Wall Offset
0.0 ft

Calculation Details

    Shop Recessed Lighting Shop Dimmers Ask Arkco to Review This Layout

    Layout Diagram

    Top-down room view, not to scale
    16 ft 12 ft

    Product Options From Arkco

    Based on selected fixture size/style

    Pot Light Layout Notes

    Wall Offset
    A common starting point is to place the first row of lights about half the fixture spacing from the wall.
    Lumens
    Lumens vary by fixture and trim. Use fixture photometrics for final lighting levels.
    Room Use
    Kitchens, offices, and work areas usually need more light than bedrooms, hallways, or accent areas.
    Final Placement
    Adjust for joists, ducts, cabinets, fans, shower zones, insulation rating, dimmers, and fixture manufacturer instructions.
    Disclaimer
    This calculator is provided as a general estimating tool only. It does not replace lighting design, photometric layout, manufacturer instructions, electrical code requirements, or approval by the authority having jurisdiction. Arkco Electrical Supply is not responsible for design decisions, installation outcomes, or code compliance based on this calculator.

    © 2026 Arkco Electrical Supply. This calculator is provided for Arkco customers and may not be copied or republished without written permission.