PlanA recessed-light layout that starts with the room
An even ceiling grid is easy to draw. A useful layout begins with walls, work planes, beams, furniture, and the photometry of the fixture.
Plan · Ceiling
Recessed light layout planner
Build an even, measured ceiling grid from room size, desired spacing, and a clear wall offset.
- Question
- How many recessed lights fit in this room?
- Runs
- Locally in this browser
- Reviewed
- 2026-08-06
Live result
Even grid4 × 3 · 12 points
Redistributed within the 2 ft perimeter offset.
Length spacing3.33 ft
Width spacing4 ft
Do not cut from this drawing. Coordinate structure, services, beam data, product ratings, controls, and wiring with qualified professionals.
From number to decision
Measure.
Read. Verify.
A 14 × 12 ft ceiling with 4 ft maximum spacing and a 2 ft offset resolves to a 4 × 3 grid redistributed inside the perimeter.
Measure
- Measure the clear ceiling plane and mark fixed obstructions.
- Choose a maximum planning spacing informed by beam data and mounting height.
- Set a wall offset that responds to the surfaces and tasks near the perimeter.
Read
- Rows and columns are fitted inside the perimeter, then redistributed evenly.
- The returned spacing may be smaller than the entered maximum.
- Each dot is a coordination point, not a confirmed cut location.
Verify
- Joists, ducts, pipes, insulation, sprinklers, fans, and ceiling systems
- Fixture spacing criteria, photometry, glare, and wall illumination
- IC, airtight, wet-location, fire, control, and local electrical requirements
The visible method
rows and columns are fitted inside the offset, then evenly redistributed
LimitAn even grid is a drafting aid, not a photometric result. Confirm joists, insulation rating, wet-location rating, controls, and wiring separately.
Results are computed from the fields you enter. Glow & Gauge does not infer a product, electricity rate, room reflectance, or professional approval.
Read the site-wide methodStarting references
Keep reading
The number needs context.
Plan