What Is the Best Size for a Bedside Table Lamp?

Walk into any homewares store in Australia, and you'll quickly realise that bedside table lamps come in a dizzying range of heights, widths, and proportions. Tall skinny ones, short squat ones, wide drum shades, narrow cone shades, the variety is genuinely overwhelming. And while it's tempting to just grab whatever looks good on the shelf, size really does matter when it comes to bedside lighting. A lamp that's too tall will glare in your eyes; one that's too short won't throw enough light to read by. So, what is the best size for a bedside table lamp?

The honest answer is: it depends on your specific bedroom setup. But there are clear, proven guidelines that take the guesswork out of it. This guide breaks down exactly what to measure, what to look for, and how to find a lamp that's perfectly proportioned for your nightstand, your bed, and your lifestyle.

Why Lamp Size Matters More Than You Think

Most people treat lamp shopping as a purely aesthetic exercise. They're looking for something that looks good, matches their bedside table, or fits a particular style. But choosing the right bedside table lamp is fundamentally a functional decision first, and a visual one second. Get the size wrong, and you'll be left with a bedside table lamp that either blinds you when you roll over or fails to properly illuminate your bedside book.

The key principle is this: the bottom of your lampshade should sit at approximately shoulder height when you're sitting up in bed. Why? Because that's the position you're in when you most need the light - reading, scrolling, or chatting before sleep. When the shade's lower edge hits at shoulder height, the light falls naturally onto your book or device without shining directly into your eyes.

In practical terms, this means the total height of your lamp (base plus shade) should land somewhere between 55 cm and 70 cm for most Australian bedrooms with standard bed heights. But your specific setup, bed frame height, mattress thickness, and bedside table height, will fine-tune that range considerably.

How to Measure for the Perfect Lamp Height

Before you buy a single lamp, do this: sit up in your bed in your normal reading or resting position. Have someone measure from the floor up to your shoulder. That number is your baseline. Now measure the height of your bedside table. Subtract the table height from your shoulder height to get the ideal lampshade bottom height. In other words, how tall your lamp needs to be from the tabletop to the bottom of the shade.

For example, if your shoulder height from the floor is 75 cm and your bedside table is 55 cm tall, you'd want a lamp where the shade bottom sits about 20 cm above the tabletop.

Of course, real lamps aren't always sold with that specific measurement front and centre. What you'll usually see is the overall height of the lamp, base to top of shade. A good rule of thumb is that the shade bottom typically sits about 60–65% of the way up the lamp's total height. So for a 60 cm lamp, the shade bottom is often around 36–39 cm from the base; factor that into your calculations.

 Your Quick Measuring Checklist

•Measure your shoulder height from the floor while sitting in bed

•Measure the height of your bedside table

•Calculate: shoulder height minus table height = ideal shade-bottom position

•For most standard Aus setups, a total lamp height of 55–70 cm works well

•Allow 5 cm of wiggle room either way. Exact sizes vary between lamp styles

•If buying online, look for "shade bottom height" or ask the retailer

Recommended Lamp Sizes by Bedside Table Height

To make things concrete, here's a practical reference table covering the most common bedside table heights found in Australian homes. These are general guidelines, not strict rules, but they'll get you in the right ballpark for most setups.

One important caveat: if you have a particularly thick mattress (such as a Euro top or pillow top that adds 8–10 cm over a standard mattress), your effective shoulder height will be higher than expected. In that case, lean toward the taller end of the recommended range for your table height.

Getting the Lampshade Width Right

Height gets most of the attention, but shade width is equally important, both for the quality of light and for the visual balance of your bedside setup. A shade that's too narrow will cast a narrow, focused beam that's fine for reading but harsh on the eyes and abrupt in ambient lighting. A shade that's too wide can feel visually overwhelming and may even block access to items on your nightstand.

As a general rule, the width of your lampshade should be roughly 1.5 to 2 times the width of your lamp base. So if your base is 15 cm wide, look for shades with a diameter of 22–30 cm. This keeps things visually proportionate and ensures the light spreads comfortably rather than concentrating in a tight zone.

In terms of absolute measurements for a bedside context, shades between 25 cm and 38 cm in diameter work for most standard setups.

Shades under 20 cm can feel too stingy and lamp-like; shades over 40 cm can encroach on available space and look out of proportion on a small nightstand. If you're working with a floating shelf or a narrow Scandi-style table, stick to the lower end of the range.

Scaling Your Lamp to Your Bedroom Size

Beyond the relationship between lamp and bedside table, you also need to think about how the lamp reads in the context of the whole room. A bedside lamp that's perfectly proportioned to your nightstand might still look undersized if you have high ceilings and a large king bed, or it might dominate a small bedroom with low ceilings and a single bed.

For standard Australian bedrooms (most commonly 3 m x 3.6 m or similar), a lamp at 50–65 cm works well across a variety of bed sizes. In larger master bedrooms with higher ceilings, you can push toward 65–75 cm without it feeling out of place. In a smaller bedroom or a guest room, 45–55 cm is usually more appropriate.

If you have a king or super king bed, consider whether a taller or more sculptural lamp is needed to hold its own visually against the larger headboard. Conversely, if you have a single or king single with a minimal frame, a slimmer, shorter lamp will feel more at home.

Sizing by Bedroom Type

•Small bedroom / Guest room: 45–55 cm lamp height, 20–28 cm shade width

•Standard bedroom / Queen bed: 55–65 cm lamp height, 28–35 cm shade width

•Large master / King bed: 60–75 cm lamp height, 30–40 cm shade width

•Apartment bedroom with low ceilings: keep under 60 cm to avoid a top-heavy look

•High-ceiling bedroom: taller lamps (65–80 cm) can work and look dramatic

Lamps for Non-Standard Setups

Not every bedroom follows the standard playbook. Here's how to approach sizing for some of the more common non-standard scenarios found in Australian homes:

Low platform beds: 

If your mattress sits only 30–40 cm from the floor, your shoulder height while in bed will be considerably lower than average. Opt for a shorter lamp, around 45–55 cm total height, and place it on the lowest table you can find, or consider a wall-mounted reading lamp instead.

Floating bedside shelves: 

These are popular in modern Australian apartments. The shelf surface is often quite narrow (20–30 cm deep), so a slim base with a compact shade (under 25 cm wide) is key. Focus on lamps with a small footprint, cordless rechargeable lamps are also an excellent option here.

Very tall beds or antique frames:

Some heritage beds and ornate antique frames sit much higher than modern beds. In these cases, your shoulder height is elevated, so you'll want a taller lamp, potentially 65–80 cm, to keep the shade bottom at the right level. A taller, more architectural base works well aesthetically too.

Studio apartments:

 When your bedroom is also your living space, the bedside lamp does double duty. Choose something that looks good from multiple angles and directions, a lamp with a 360-degree shade (rather than a directional cone) will serve you better in a multifunctional space.

Before You Buy: A Final Size Checklist

Once you've found a lamp you love the look of, run through these quick checks before committing. They'll save you the frustration of getting home and realising it doesn't quite work.

Pre-Purchase Size Checklist

• Total lamp height (base to top of shade): within your calculated range?

• Shade bottom height: close to your shoulder height above the table?

• Shade diameter: 1.5–2x the base width, and within 25–38 cm for most setups?

• Shade depth (front to back): Does the shade depth suit your table depth?

• Overall footprint: Will the base fit comfortably on the table with room to spare?

• If buying a pair: are both lamps identical in height and shade dimensions?

The Right Size Is the One That Works for You

So, what is the best size for a bedside table lamp? In most Australian bedrooms, you're looking at a lamp between 55 and 70 cm tall with a shade width of 28–38 cm, but the numbers that truly matter are the ones specific to your bed height, your table height, and your shoulder height when sitting up. Measure first, shop second, and you'll avoid the all-too-common disappointment of a lamp that looks great in the store but feels wrong the moment you try to read by it at night.

The perfect bedside lamp is one you stop noticing, because it simply does its job beautifully, night after night. Size it right, and that's exactly what you'll get.