11/30/2023 0 Comments 500 lumens to watts![]() ![]() ![]() If you already have some LED lamps on your shortlist, you can convert their lumen value into the output (in watts) of previous lighting. So you can calculate how many lumens the new LED lamps should have based on your previous lights. /rebates/2fthe-edit2fthe-guides2flight-bulb-facts-the-meaning-of-lumens2f&. You can also use the following lumen-to-candlepower and vice versa conversion calculator to convert one quantity to another. This free online calculator will help you convert lumens to watts and vice versa. Thus, to convert from candlepower to lumen, you can multiply the candlepower measurement with 12.57, and to convert from lumen to candlepower, you can simply divide the lumen measurement by 12.57.įor example, a 40-watt lamp rated at 500 lumen has a candlepower of (500 ÷ 12.57) = 39.8 cd. While the formula to convert candlepower to lumen is given as, Hence, the formula to covert lumen to candlepower can be obtained as following, Therefore, a light source which uniformly radiates an intensity of one candela in all directions is given by following, Just like legacy luminaires, the lamp lumens are not the same as the luminaire lumens. LED lumens is the lumens per watt of the LEDs. There is also a difference between LED lumens and luminaire lumens. The solid angle in a full sphere is equal to 4 Π steradians. System watts is the wattage of the LED based on the mA provided by the LED driver and the wattage used by the LED driver. Thus, a lumen can be expressed mathematically as, From its definition, a source of light emitting one candela of luminous intensity uniformly over a solid angle of one steradian is said to be emitting one lumen. However, by applying mathematics, a close-enough approximation can be obtained.įor all practical purposes, candlepower equates directly to candela. How to Convert Lumen to Candlepower and Vice Versaįrom the above discussion, it is clear that lumen and candlepower measure two different things, and therefore, accurately converting one to another is not possible.
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