If you already have some LED lamps on your shortlist, you can convert their lumen value into the output (in watts) of previous lighting.Įxample 2: You have a torchiere with two 35W bulbs and want to replace them with LED lights. So you can calculate how many lumens the new LED lamps should have based on your previous lights. This free online calculator will help you convert lumens to watts and vice versa. The Lumens to Watts Calculator helps you to compare the brightness of different light sources. The brightness in lumens is super important when using LED lamps. You can use the lumen value to compare the brightness of different lamps, regardless of their efficiency and lighting technology. The lumen specification is often given in the short form lm. For LED luminaires and illuminants, this must always be stated in the product description. This is the power emitted per second in the wave range of visible light. The unit lumen describes the luminous flux emitted by a light source. This is possible because lamp A could have a better efficiency due to high quality components and therefore emits more light. For the comparability of LED lamps the actual brightness is indicated in lumens. Different components in various LED lamps lead to varying brightness with the same power consumption.įor example, a 5W LED illuminant of type A can light up much brighter than another 5W LED lamp of type B. But the wattage plays a minor role now and only allows a very rough conclusion on the actual brightness. The replaced lamp was just as bright as before and there was no need to worry about the correct brightness.įor LED lamps, the power consumption is also indicated in watts. If a 60W bulb fails, it could be simply replaced by a new 60W bulb. Here the wattage was the most important indicator for the brightness. Old light sources such as incandescent bulbs or halogen lamps were easy to choose. Scroll to the lumens to watts calculator Convert lumens to watts
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