How to Choose a Lampshade: Size, Shape, and Fit

A shade generally looks balanced when its width is about one and a half to two times the width of the widest part of the lamp base, and its height is roughly two-thirds of the base height. These ratios keep a lamp from looking top-heavy or undersized.

Treat them as starting points. A wide, low base can carry a broader shade, while a tall, slim base usually looks best with a narrower one.

A shade has three measurements: the top diameter, the bottom diameter, and the slant height measured down the sloped side, not straight down the middle. Manufacturers list all three, so match them when replacing a shade.

To size a new shade, measure the lamp base width and the base height first, then apply the width and height ratios above before comparing candidate shades.

Empire shades taper from a narrow top to a wider bottom and suit traditional and transitional lamps. Drum shades keep a similar top and bottom diameter and suit modern and rounded bases. A tall, angular base often pairs well with a simple drum.

Rounded and sculptural bases usually look calmer under a clean drum or a gently tapered shade rather than a heavily detailed one.

The fitting is how the shade attaches. A spider fitting rests on a harp and is secured with a finial, an Uno fitting screws around the bulb socket, and a clip-on fitting clips directly onto the bulb. Confirm which one your lamp uses before buying.

Check the harp height too. A harp that is too tall or short changes how much of the bulb and base the shade covers, which affects both looks and glare.

A light-colored, translucent shade spreads a soft, broad glow and lets more light through the sides. A dark or opaque shade concentrates light up and down and creates a more defined pool, which suits accent placements more than general room light.

Always leave the shade clearance the lamp maker specifies around the bulb, and use a bulb within the fixture rating so the shade does not sit too close to heat.