There is no firm answer – it will depend on a number of factors including room size and shape, height of ceilings, colour scheme, type of lamps & fitting, task areas and needs of the user.Īs a basic guide below are the lumens required per Sq M (10.76 sq ft) for different room settings. The “useful lumen” rating is normally lower than the total lumen output but has more relevance to a spotlight bulb where useful light is in a forward focussed direction. This is a measurement of useful light emitted in a standardised 90 degree cone (see image). To make comparisons fairer and easier the EU has recently introduced a “useful lumens” rating. With a directional bulb such as GU10 spotlight, the light is emitted in many directions, some of this light (spill light) may not be useful but it is counted in the total lumen rating. Lumens and Useful Lumensįor non-directional bulbs such as a globe, golfball or candle shape, the total lumen output is calculated for all directions. We recommend that you make lm/W one of the first things you look at when choosing LED panels. In simple terms, the 152lm/W panel is 51% cheaper to run than the 80lm/W panel. In comparison, a popular but less efficient edge-lit LED panel may provide 3600 Lumens for 45W. This LED fairy light bulb is designed to last 25 times longer than incandescent bulbs. The energy-efficient bulb uses only 2 watts of power and operates within a wide 85-265 VAC range. You can think of this as similar to miles-per-gallon in a car, as a higher lm/W means higher efficiency and lower running costs compared to similar but less efficient models.įor example, the highly efficient Compact High Performance+ Back-lit LED Panel offers light output of 3500 Lumens for 23 Watts of power. LEDs emit up to 65 lumens of warm white, green, red, multicolor RGB fade, or static multicolored RGB illumination. This figure is a useful way to measure the efficacy of lighting products by measuring the total light output in Lumens divided by the power usage in Watts.
11.5W LED = 60W conventional.īelow is an approximate guide to help you decide the lumen rating for your LED replacement lamp. We also provide a conversion guide to the "old wattages" on the pack e.g. All Integral LED lamps have the lumen rating clearly marked on the packaging and on the lamp base. To achieve the same light output of a 60W conventional bulb you will need an LED lamp with around 800 - 850 lumens.
So as a result, using Watts as a guide to brightness is no longer relevant. As technology improves, more lumens will be produced using even less Watts - i.e. That's 87% less energy for the same light output! When using LED more energy is converted to light rather than heat. For example, a 6.5W LED lamp will give a similar light output to a 50W Halogen bulb. With low energy LED lamps, more light output can be achieved with much less power consumption. This incorrectly linked power consumption (Watts) to light output. We have all bought 50W or 60W conventional bulbs or spotlights in the past expecting a certain level of brightness. The higher the lumen rating the “brighter” the lamp will appear. In simple terms, Lumens (denoted by lm) are a measure of the total amount of visible light (to the human eye) from a lamp or light source. Whatever classification of bulb you need, you’ll have plenty of options when it comes to wattage, temperate and energy efficiency, thanks to Toolstation’s comprehensive selection of LED light bulbs.Think of lumens as a "new" way of knowing how bright a lamp is. Across our product selection you’ll find everything from frosted E27 globe bulbs which give off a warm hue, right through to vintage LED filament bulbs that really make an impact. Lamp lighting is the number one way to add some ambience around your home. Across our range you’ll find everything from GU10 bulbs that fit standard downlights to GX53 circular LED light panels, as well as white LED lights that are ideal for utility spaces and dimmable LED bulbs for added effect in your living areas. They’re far more energy efficient and also last much longer – for as much as 30,000 hours – helping you save on your energy bills as well as on the cost of replacing bulbs all the time. Warm LED bulbs have long since overtaken classic incandescent bulbs as our primary source of lighting.
With LED bulbs in all shapes and sizes, and from leading manufacturers like Meridian Lighting, Integral LED and Philips, we’re confident we have exactly the bulb you’re looking for here at Toolstation – many of which are available in packs of 5 or 10 and at friendly low prices. Small, powerful, and energy efficient, the humble LED has become the staple source of lighting in and around every UK home.
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