What Size Lampshade Do You Need for a Table Lamp?

For most table lamps, the lampshade should be roughly two thirds the height of the base and about twice as wide as the widest part of the base. The bottom edge of the shade should sit just low enough to hide the bulb fitting and the top of the harp or neck when you are seated nearby. If you remember those three checks, height, width and how much of the hardware stays hidden, you will avoid the two most common mistakes: a shade that looks like a small hat perched on top, or one so large that it swamps the lamp and the table beneath it.

That is the short answer. The longer answer depends on where the lamp lives, how you use it and what shape the base is. Below we walk through each measurement in turn, using the same approach our team takes when helping customers choose from our range of modern table lamps UK buyers can shop online.

Start With the Base, Not the Shade

Before you look at shades, measure the lamp itself. You need two figures: the height of the base from the table surface to the top of the bulb holder, and the width of the base at its widest point. A tape measure and a notepad are all you need.

The height measurement should stop at the lamp holder, not the finial. The finial is the small decorative piece that screws on top of the shade, and it is not part of the proportion calculation. If your lamp has a separate harp, the U shaped wire frame that supports some shades, measure to the top of the lamp holder rather than the top of the harp.

For width, measure across the fullest part of the body. On a gourd or ginger jar lamp this will be the belly. On a column lamp it may simply be the footprint. On a lamp with a flared foot, use whichever is wider, the foot or the body, because that is the part your eye reads as the lamp's visual weight.

Getting the Height Right

A shade that measures around two thirds of the base height usually looks settled and balanced. So a base of 45cm suits a shade of roughly 30cm tall. A base of 36cm would suit something closer to 24cm.

Tall, slim column lamps often look better with a slightly shorter shade, because a deep shade on a narrow stem can look top heavy. Squat, rounded bases can carry a deeper shade.

When the lamp is assembled, the lower rim of the shade should cover the lamp holder and any visible switch housing. If you can see the metal fitting from a normal seated or standing position, the shade is either too short or sitting too high. Raising or lowering the shade by a centimetre or two using a different harp size is often enough to correct this.

Getting the Width Right

The bottom diameter of the shade should be about twice the width of the base. A base 18cm across at its widest suits a shade with a bottom diameter of around 36cm. Some designers allow a little more generosity, up to two and a half times the base width, particularly for statement lamps in larger rooms.

The shade should also extend at least a couple of centimetres beyond the widest point of the base on each side. If the body of the lamp pokes out beyond the shade, the proportions will feel cramped, even if the height is correct.

Think about the table too. A shade should not overhang the edge of its table by much, if at all. Overhanging shades get knocked and make a table look undersized. If you are working with a compact lamp table beside a sofa, a slightly narrower shade will look tidier. Our selection of modern lighting UK collections includes lamps in many sizes, so it is worth measuring your table before choosing a base.

How Shade Shape Changes the Rules

Shape affects how a shade relates to its base, and some shapes are more forgiving than others.

Drum shades have straight sides and the same diameter top and bottom. They suit contemporary bases, columns and simple ceramic shapes. Because the top is as wide as the bottom, they throw a broad pool of light upwards as well as downwards, which is helpful in rooms that need some general brightness.

Empire shades have a narrower top than bottom. They are the classic choice for traditional bases such as candlestick, urn and baluster shapes. For an empire shade, apply the width guide to the bottom diameter. The tapered top means more light is directed downwards onto the table.

Coolie shades are steeply tapered, with a much wider bottom than top. They work well on slender bases where you want a strong downward pool of light, such as beside a reading chair.

Square and rectangular shades should echo the base. A square shade on a square or faceted base looks intentional. A rectangular shade suits a lamp that will be viewed mainly from the front, such as one on a console table against a wall, because it reduces depth without losing visual width.

As a broad principle, match angular shades to angular bases and curved shades to curved bases. Mixing the two can work, but it requires more care with proportion.

Bedside Lamps: A Special Case

Bedside lamps need to be measured in relation to the bed as well as the cabinet. When you are sitting up in bed, the bottom of the shade should be roughly level with your chin. If the shade sits much higher, the bare bulb will be visible from the pillow. If it sits lower, light will be blocked by your shoulder when you read.

In practice, this means the combined height of the bedside table and the lamp, measured to the bottom of the shade, should be close to the height of your mattress plus around 50cm. For most UK beds with a standard frame and a deep mattress, this lands somewhere between 100cm and 120cm from the floor.

Width matters too. A double bed with two small bedside tables cannot take wide shades without them crowding the headboard. Keep the shade diameter a few centimetres narrower than the top of the cabinet. If you are still choosing furniture, our range of bedside cabinets UK sale pieces covers a variety of heights, which makes it easier to pair a lamp at the right level.

Living Room Lamps and Side Tables

In a living room, the lamp is usually viewed from a seated position on a sofa or armchair. The lower edge of the shade should be at about eye level for someone sitting down. That keeps the bulb concealed while still allowing light to spill over the arm of the sofa and onto a book or tablet.

The height of the table makes a large difference here. A lamp table level with the sofa arm, or a few centimetres below it, suits most lamps. A very low coffee height table will need a taller lamp to bring the shade up to eye level. If you are unsure which surface to use, our guide to modern side tables UK options can help you pick a height that works with your seating.

The terms side table, end table and lamp table are often used interchangeably, but there are small differences in height and footprint that affect lamp choice. We explain these in our article on side tables, end tables and lamp tables in UK homes.

Shade Material and Light Quality

Size governs proportion, but material decides the character of the light. It is worth considering both together, because a thicker shade may need a larger diameter to let enough light escape.

White or ivory linen gives a soft, even glow through the fabric as well as out of the top and bottom. This is the most flexible option and suits almost any room.

Opaque shades, including card lined, metallic and dark fabric versions, block light through the sides entirely. All the light goes up and down, which creates dramatic pools but less overall brightness. These suit accent lighting rather than task lighting.

Fittings and Safety

The way a shade attaches to the lamp affects its finished height and position. The three main types of fitting found in UK homes are worth knowing.

A spider fitting uses a metal frame that sits on a harp and is secured with a finial. This allows the most adjustment, because you can change the harp size to raise or lower the shade.

A uno fitting has a ring that sits directly over the bulb holder. It cannot be adjusted for height, so the base and shade must be correctly proportioned from the start.

A clip fitting attaches directly to the bulb. These are generally used for small accent shades and are best paired with low heat LED bulbs.

Always leave adequate space between the bulb and the shade fabric. LED bulbs run much cooler than older incandescent types, but a cramped shade still traps heat and can discolour over time. For more on what to look for, read our guide to table lamp safety standards in the UK, which covers markings and fitting requirements.

A Quick Measuring Checklist

If you want to check a lamp in a few minutes, run through these steps.

• Measure the base height to the lamp holder and multiply by two thirds for the shade height.
• Measure the widest part of the base and double it for the bottom diameter of the shade.
• Check that the shade extends beyond the base on all sides.
• Check that the lower rim hides the bulb holder from a seated position.
• Check that the shade does not overhang the table edge.
• For bedside lamps, check that the shade bottom sits near chin height when sitting up in bed.

Once you have these figures, take them with you when browsing. Many shades are listed with three dimensions: top diameter, bottom diameter and slant height. Slant height is the length along the side, so a steeply tapered shade will be slightly shorter vertically than its slant height suggests.

When to Break the Rules

Proportion guides are a starting point, not a limit. An oversized shade on a small base can look deliberate in a pared back room. If a choice looks considered and the lamp still gives useful light without glare, it works.

When you are ready to choose, browse the lamps, tables and accessories at Furniture in Fashion. We offer free delivery to most UK mainland postcodes, and Returns are available up to 30 days.

Frequently Asked Questions

Should a lampshade be wider than the base?

Yes. The bottom of the shade should be about twice as wide as the widest point of the base, and it should extend beyond the base on every side so the body of the lamp sits comfortably inside its silhouette.

How high should a lampshade sit on a table lamp?

The lower rim should cover the bulb holder and any switch housing when viewed from a normal seated position. If you can see the fitting, the shade is sitting too high or is too short.

Can I put a drum shade on a traditional lamp?

You can, but empire shades are usually the more natural match for candlestick and urn bases. Drum shades suit simple, contemporary or rounded bases best.

What size shade suits a small bedside lamp?

Apply the same two thirds height and double width guides, then check that the shade is narrower than the top of the bedside cabinet so it does not crowd the headboard or overhang the edge.