Most table lamps work well with a bulb of around 400 to 800 lumens. At the lower end, around 200 to 450 lumens gives a soft ambient glow for living rooms and bedrooms, while 450 to 800 lumens is better for reading, crafts or desk work. If you need a direct starting point, a bulb of roughly 450 to 500 lumens suits most general table lamps in UK homes.
Lumens measure how much visible light a bulb produces. Since LEDs replaced traditional bulbs, wattage no longer tells you much about brightness, which is why lumens are now the number to look for. Below we explain how to choose the right output for each room and how the shade, bulb colour and lamp position affect how bright your modern table lamps UK actually feel.
For decades, people chose bulbs by wattage: 40 watts for a bedside lamp, 60 watts for a reading lamp. Wattage measures energy use, not brightness. It worked as a shorthand because traditional bulbs were all similarly inefficient.
LED bulbs produce far more light per watt, so a small LED can match the brightness of a much higher wattage incandescent bulb. That is why packaging now shows lumens prominently, often with an equivalent wattage alongside it.
As a widely used rule of thumb:
If you remember what wattage you used to buy for a particular lamp, these equivalents are a quick way to find the LED that will feel familiar.
The right brightness depends on what the lamp is for. Table lamps are rarely the only light in a room, so think of them as one layer within a wider scheme. Our modern lighting UK sale collection covers ceiling, wall and floor lighting to complete that scheme.
For ambient lamps on side tables or consoles, around 200 to 450 lumens per lamp creates a relaxed atmosphere in the evening. If a lamp sits beside a reading chair, choose 450 to 800 lumens for that one.
Bedside lamps are often used for winding down, so a softer output of around 200 to 450 lumens suits most people. If you read in bed regularly, a lamp nearer 450 to 600 lumens with a dimmer gives you flexibility.
Task lighting needs more output. Around 450 to 800 lumens from a desk or table lamp, combined with good general light, helps reduce eye strain during long working sessions.
A table lamp on a hall console is usually a welcoming accent rather than a main light. Around 200 to 400 lumens is generally enough, particularly if it works alongside one of our modern wall lights UK further along the corridor.
Lamps on a sideboard in a dining room set the mood, so lower outputs work well. Around 200 to 400 lumens per lamp, dimmed further during meals, creates a flattering glow.
Two lamps with identical bulbs can feel very different because of their shades.
Light coloured fabric shades in white or ivory let a lot of light through and also bounce light down onto the table. They make a lamp feel brighter overall.
Dark or opaque shades such as black, navy or metal block much of the light. The lamp throws a focused pool above and below but the room feels darker. You may want a slightly higher lumen bulb to compensate.
Glass shades vary. Clear glass shows the bulb and can feel bright and glary, while opal and frosted glass diffuse it into a soft, even glow.
Woven and pierced shades such as rattan and perforated metal throw decorative patterns. They lose some brightness but gain atmosphere.
Colour temperature, measured in kelvin, describes how warm or cool light looks. It changes how bright a room feels even at the same lumen level.
A 400 lumen bulb at 4000K will usually feel brighter than a 400 lumen bulb at 2700K. For most table lamps in UK homes, warm white is the comfortable default.
Always check the lamp’s maximum rated wattage and bulb fitting before choosing a bulb. Most UK table lamps take E27 or E14 screw fittings or B22 or B15 bayonet fittings. The fitting is usually printed on the lamp holder or listed in the product details.
The rated maximum wattage is a safety limit, usually based on traditional bulbs. LEDs run far below these limits, which is one reason they are a sensible choice for table lamps with fabric shades. Our guide to UK table lamp safety standards explains the markings you will see on a lamp and its packaging.
Bulb shape matters too. A globe bulb in a clear glass lamp looks decorative, while a standard pear shape under a fabric shade gives more even light. Small candle bulbs suit compact lamps with narrow shades.
If you are unsure how bright to go, choose a slightly higher lumen bulb and a dimmer. A dimmable LED in a lamp with an inline or touch dimmer lets you have reading level light when you need it and a soft glow the rest of the time.
Not every LED is dimmable, and not every dimmable LED works with every dimmer. Check the packaging for a dimmable label and, if your lamp has a built in dimmer, confirm the type of bulb it recommends. Smart bulbs controlled by an app or voice assistant are another option and can be dimmed without any special switch.
Table lamps rarely light a whole room on their own, and they are not meant to. A balanced room usually combines three types of light: general light from a ceiling fitting, task light for reading or working, and accent light to add warmth and highlight features.
Wall lights are a useful bridge between the ceiling and table lamps, particularly in rooms with low ceilings, where they add light at middle height without crowding surfaces.
Ceiling height and the age of your property also affect how light travels around a room. Our article on lighting for UK ceiling heights by property age looks at how this shapes your lighting plan.
Brightness is not only about the bulb. The room itself changes how much light you need from each lamp.
Room size. A small bedroom or box room can feel well lit with a single lamp of around 400 lumens, while a large open plan living space may need three or four lamps to feel balanced. Rather than putting a very bright bulb in one lamp, it is usually better to spread lower outputs across several lamps placed around the room.
Wall and ceiling colour. Pale walls reflect light back into the room, so lamps feel brighter. Dark walls in navy, charcoal or forest green absorb light. In a dark room, either choose bulbs towards the upper end of the range or add an extra lamp.
Lamp height. A tall lamp spreads light more widely across the room, while a short lamp creates a concentrated pool on the surface beneath. For reading, the shade should sit roughly at shoulder height when you are seated, so the light falls onto the page without shining in your eyes.
Distance from the task. Light falls away quickly with distance. A lamp right beside your chair needs far fewer lumens than one on the other side of the room to give the same reading light. Placing the lamp close to where you need it is often more effective than buying a brighter bulb.
Surface finish. Glossy furniture, glass tables and mirrors reflect light and can make a lamp feel brighter, while matt wood and fabric absorb it. If your lamp sits on a high gloss or mirrored surface, a slightly lower output may be more comfortable.
Once you know the brightness you need, choosing the lamp itself becomes much easier. You can explore our lamps and the furniture to place them on at Furniture in Fashion.
Not for reading or desk work, especially under a fabric shade. For a purely decorative or bedside lamp, 800 lumens can feel strong unless you use a dimmer.
Around 200 to 450 lumens suits winding down. If you read in bed, aim for 450 to 600 lumens with a dimmer.
Not always. Colour temperature, beam spread and the shade all affect how bright a bulb feels, so two 450 lumen bulbs can look quite different.
Usually yes, as long as the bulb fits and its wattage is within the lamp’s maximum rating. LEDs normally fall well below these limits.
Warm white, around 2700K, suits most living rooms and bedrooms. Neutral white around 3000K to 4000K is better for desks and work areas.
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