Lighting

Recessed Lighting Spacer

Enter your room and ceiling height to generate a symmetrical recessed-light grid - exact spacing, wall offsets and total fixture count for clean, even ceiling illumination.

Drives the spacing (height ÷ 2 rule).

Recessed layout

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Grid
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Spacing (center-to-center)
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Offset from walls
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Enter your room to begin.

Ceiling plan

Even light starts with even spacing

Recessed downlights create pools of light. Space them too far apart and you get scallops of bright and dark; too close and the ceiling looks like a runway. The classic fix is the ceiling-height-÷-2 rule: on an 8-foot ceiling, place fixtures roughly 4 feet apart; on a 10-foot ceiling, about 5 feet. Taller ceilings tolerate wider spacing because each beam spreads farther before it lands.

Centering the grid

A professional layout is symmetrical: the border between the outer lights and every wall should be equal, and it should be about half the spacing between fixtures. This tool rounds your room to a whole number of rows and columns, then divides evenly so the grid is perfectly centered with matching margins on all four sides.

Note: this covers general (ambient) lighting. Add dedicated task lights over counters, islands and reading spots on top of the ambient grid.

Frequently asked questions

How far apart should recessed lights be?

A reliable starting rule is to divide the ceiling height by two. An 8-foot ceiling gives roughly 4-foot spacing between fixtures; a 10-foot ceiling gives about 5 feet. This tool refines that into an even grid with matching wall margins.

How far from the wall should the first light go?

Keep the first row 1.5–3 feet from the wall - typically half the fixture-to-fixture spacing. This washes the walls gently and avoids a dark border around the room.

How many recessed lights do I need?

Enter your room size and ceiling height and the tool lays out symmetrical rows and columns, then reports the total fixture count and exact spacing so the grid is centered.

What is the ceiling-height-÷-2 rule?

It is a general-lighting guideline: spacing (in feet) ≈ ceiling height (in feet) ÷ 2. Higher ceilings can carry lights farther apart because the beams spread more before reaching the floor.

Do you save my room dimensions?

No - the layout is generated entirely in your browser.

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