How many lumens does a reading lamp actually need?
A reading lamp needs 450–800 lumens measured at the page, which most LEDs achieve with a 8–10W bulb — the output of an old 60W incandescent.
For comfortable extended reading, the light falling on the page should measure 450–800 lumens of output, which corresponds to the 60W incandescent most people grew up reading under. That output now comes from an 8–10W LED bulb, so the wattage printed on the box is largely irrelevant — the lumen figure and the '60W equivalent' marking are what matter. When choosing between table lamps for a reading chair, check the maximum bulb rating on the holder as well: a lamp rated at 40W maximum cannot take a bright enough bulb for serious reading, whereas most lamps in our table lamps range accept 60W-equivalent LEDs without issue. A dimmer is worth having, because the ideal output shifts between daytime reading and reading in a dark room at night. If the lamp feeds a circuit in a rented property or you have any doubt about the wiring, a qualified electrician registered with a body such as NAPIT can verify it is safe before you load it with a brighter bulb.
Is wattage or colour temperature more important for reading?
Lumens matter more than wattage for reading, but colour temperature sets comfort: 2700–3000K suits evening reading, while 4000K aids detailed tasks.
Wattage tells you how much power a bulb draws, not how much light it delivers — two 8W LEDs can differ by 300 lumens depending on efficacy. Read the lumen figure first, then the colour temperature. For evening reading, choose 2700–3000K (warm white), which limits blue light and helps the body wind down before sleep. For daytime study, pattern work or small print, 4000K neutral white gives better contrast and less eye strain over long sessions. Anything above 5000K reads as clinical and is rarely comfortable in a living room. Colour rendering matters too: a CRI of 80 or above is standard, but 90+ makes print and photographs look noticeably more accurate. In practice, a single lamp can serve both purposes if you fit a dimmable 2700K LED and run it at full output for study, then dim it for the last chapter of the night. The combination to avoid is a low-lumen decorative bulb — 200 lumens at 2200K looks atmospheric and is effectively useless for reading anything smaller than a large-print edition.
Where should a reading table lamp be positioned?
Position a reading table lamp so the bottom of the shade sits at shoulder height when seated, roughly 40–50cm to the side of the page.
Position the lamp so the bottom of the shade sits roughly at shoulder height when you are seated — around 100–110cm from the floor on a standard side table. Place it 40–50cm to the side of your reading position, on the opposite side to your writing or holding hand, so the page is lit without your arm casting a shadow across the text. The shade should be wide enough that the bulb is not visible at seated eye level, and the light pool should cover the page plus a little surrounding area. If the lamp sits behind your shoulder rather than beside you, glare reflects off glossy pages; if it sits too far away, you compensate by raising the output and losing the room's ambience. In rented accommodation, landlords carry responsibility for the fixed electrical installation, and guidance from Shelter sets out what they must maintain — but the lamp itself, its flex and its plug remain yours to check. Inspect the flex for damage each time you move the lamp.
Do LED bulbs change the wattage calculation?
Yes — LED bulbs use roughly a tenth of the power, so a 60W-equivalent reading bulb draws only 8–10W while producing the same 450–800 lumens.
Yes — LED technology produces around 80–100 lumens per watt against roughly 12 for incandescent, so the calculation shifts from watts to lumens entirely. A 60W incandescent produced about 700 lumens; an LED delivering the same output draws 8–10W. This matters in two practical ways. First, the maximum wattage rating on a lamp holder — often 40W on older or decorative fittings — is a heat limit, and an LED running well under that limit is safe even when it outperforms the old bulb. Second, brightness is now a design choice rather than a thermal constraint: a compact lamp can take a 60W-equivalent LED that would have overheated an incandescent of the same size. Fit a quality branded LED rather than the cheapest option, because cheap LEDs often overstate lumen output and degrade faster. For a desk-based reading setup, an adjustable task lamp lets you direct the full output exactly where it is needed, which means you can read comfortably at lower overall lumens and reduce glare on screens or glossy paper at the same time.