Light Size & Installation Guide

Choosing the right size fixture is the difference between a room that feels considered and one that feels off. These are the proportions interior designers work from. Every number below is a starting point—always check the exact dimensions listed on the individual product page before you order.

Chandelier Size for a Room

The standard rule: add the room’s length and width in feet, and the sum is your chandelier diameter in inches.

A 12 ft × 14 ft living room → 12 + 14 = 26 → look for a chandelier around 26 inches in diameter.

For height, allow 2.5 to 3 inches of fixture height for every foot of ceiling height. An 8 ft ceiling suits a fixture roughly 20–24 inches tall; a 10 ft ceiling can carry 25–30 inches.

In any room where people walk underneath, keep the bottom of the fixture at least 7 feet above the floor.

Over a Dining Table

Here the table governs, not the room. Two ways to size it:

Width: the fixture should be about one-half to two-thirds the width of the table, or simply the table width minus 12 inches. A 42-inch-wide table suits a 24–28 inch chandelier. Leave at least 6 inches of clear table on either side.

Height: hang the bottom of the fixture 30 to 36 inches above the tabletop for an 8 ft ceiling. Add roughly 3 inches for every additional foot of ceiling height. Higher makes the table feel exposed; lower blocks sightlines across the table.

For a long rectangular table, a linear fixture or two smaller pendants usually reads better than one round chandelier.

Entryways and Stairwells

An entry chandelier is the first thing a guest sees, so err toward generous rather than modest.

Single-storey entry: apply the same 2.5–3 inches of height per foot of ceiling. Keep 7 feet of clearance above the floor.

Two-storey foyer: hang the fixture so its center sits level with the second-floor window if there is one, so it reads correctly from both outside and the landing. The bottom should still clear the first floor by at least 7 feet, and clear any door swing.

Stairwell: measure clearance from the highest stair tread the fixture passes over, not from the floor below. A multi-tier fixture like our Alabaster Multi-storey Chandelier is designed for exactly this drop.

Ceiling Lights

Ceiling height decides the mount type:

Under 8 feet — use a flush mount. There is not enough room for a drop without it feeling oppressive.

8 to 10 feet — a semi-flush or short-drop fixture works, and adds far more character than a flush mount.

For diameter, the same length-plus-width formula applies, but scale down about 20 percent since a ceiling light sits tighter to the plane. Browse the range in Ceiling Lights.

Table Lamps

Total height (lamp plus shade) for a side table or console: 26 to 34 inches. As a proportion, the lamp should be roughly 1.5 times the height of the table it stands on.

The seated-eye-level test: sit down beside the table. The bottom edge of the shade should fall at or just below your eye level. Higher and you stare into the bulb; lower and the light pools uselessly on the tabletop.

Bedside: the bottom of the shade should sit near chin height when you are sitting up in bed—usually 20 to 28 inches of total lamp height on a standard nightstand.

Shade width: roughly twice the width of the lamp base, and never wider than the table it sits on. See Table Lamps.

How Much Light You Actually Need

Fixtures are rated in lumens, not watts. A rough target for general room lighting is 20 lumens per square foot; for dining and task areas, 30 to 40 lumens per square foot.

A 12 × 14 living room is 168 sq ft → about 3,400 lumens of ambient light. That is rarely one fixture’s job—layer a chandelier with table lamps rather than asking a single ceiling fixture to do everything.

Colour temperature matters as much as quantity. 2700K is warm and residential; 3000K is slightly crisper and flatters brass and crystal; anything above 3500K starts to feel commercial in a home.

Installation

Check the junction box. A standard ceiling box is rated for roughly 50 lb. Large crystal and alabaster fixtures can exceed this. Heavy fixtures need a fan-rated or heavy-duty box anchored to a joist or brace—this is the single most common installation mistake.

Hardwired fixtures should be installed by a licensed electrician. Beyond safety, incorrect installation can void manufacturer coverage and may not meet local electrical code.

Chain and downrod length. Fixtures supplied with chain or rod can usually be shortened on site. Confirm the adjustable range on the product page before ordering for a high ceiling.

Sloped ceilings need a sloped-ceiling adapter for the canopy. Check compatibility before you order.

Dimmers. If you plan to dim, make sure both the bulb and the dimmer switch are LED-compatible. A conventional dimmer on an LED bulb causes flicker and buzz.

All our fixtures are built to standard US electrical specifications (120V). If you are installing outside the US, confirm compatibility with your local standards first.

Before You Order

Measure the room’s length, width, and ceiling height. Measure the table if the fixture hangs over one. Note the clearance you need underneath. Then check the exact diameter, height, and adjustable drop on the product page against those numbers.

Still unsure? Email support@artiverre.com or call +1 (510) 439-9576 with your room dimensions and we will tell you what fits.

The figures above are widely used design guidelines, not code. For anything structural or electrical, follow your local building code and use a licensed electrician.