This avoids disappointments that the new LED lamp is much darker than the old incandescent lights. Conclusionīefore you replace old light sources with modern LED lamps, you should think about the desired brightness. With a luminaire above the dining table for example, the table would be illuminated just as brightly as before, only the indirect lighting of the ceiling would be darker than before. Many LED lamps, on the other hand, have a lower beam angle.įor this reason, the lumen value of an LED lamp can often be slightly lower than with the old light source. Old light bulbs and halogen lamps emit their light almost all around. So the lumen value says nothing about how the light is diffused in the room. The direction or beam angle of the emitted light is not taken into account. The luminous flux or brightness in lumens only indicates the intensity. Important notes for lumens to watts conversion Due to the active development of LED technology, a further increase in lumens per watt can be expected in the coming years. The brightness specifications for LED technology varies greatly depending on the quality of the light sources. PowerĬomparison of power consumption (in watts) and brightness (in lumens) of different lighting technologies The values are average values of the respective lighting technology and vary by manufacturer. This table shows an inverted comparison of the power consumption and the respective brightness of all common light sources. With the same brightness, the LED only needs 7 to 9 watts, depending on manufacturer and model. You will find the suitable LED replacement in the 5th column of the same row. You can find the 13 watt CFL bulb in the 3rd row of the 4th column. Lumens to watts comparison of different lighting technologies Example Comparisons In this table you will find a comparison of the power consumption and the respective brightness of all common light sources. The result should serve as a guideline for the brightness of the new LED lights. After a click on the calculate button the luminous flux is displayed in lumens. In the calculator, select Watts to Lumens as the conversion type, enter the value 35 and select the item Light bulb for comparison. 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.
#1100 lumens to watts free#
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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