LUMENS/WATT CALCULATOR. You didn't even give the watts or lumen rating of the bulb in the electric lantern. B22 Bayonet LED Candle Bulbs, Techgomade 6W Led Candle Light Bulb, 60W Equivalent, Soft White 3000K, 550LM, Energy Saving Light, Non-Dimmable, For Bedroom, Living, Kitchen, Crystal chandeliers, 3 â¦ Hi can anyone say if there is a conversion factor for watts to candle power. As other posters have said, you can't really measure perceived light in "watts". You already know about how to convert foot-candles to lumens (Lux) and Watts: A To calculate Lumens (Lux) from foot-candles: Lumens = Foot Candles x 10.76 . All other measurements are based on the lumen.The lumen measurement originated from the basic concept of foot-candles. 100 sq. To produce 20,000 lumens, the first light needs 153.84 watts. One lumen equals the amount of light emitted by one candle that falls on one square foot of surface located one foot from the candle. Lumens to Candela Calculator It is a conversion calculator that converts the luminous flux in lumens (lm) to the luminous intensity in candela (cd). Similarly, it is asked, how many lumens is a 1 million candlepower spotlight? Both produce the same amount of light. An equivalent compact fluorescents (CFL) bulb in light output (lumens) should consume only around 7 watts and LEDs approximately 6 watts. The result should serve as a guideline for the brightness of the new LED lights. B To calculate Watts from foot-candles: Watts = Lumens x 0.001496. Unlike the antiquated Wattage system (which measures the power required to light a bulb), Lumens indicate the true brightness of a bulb regardless of the power required to light the bulb in Watts (please see table below). A candela is a lumen per steradian. The resulting figure is the equivalent amount of lumens. 5 years ago. In each case, the important factor when choosing the replacement is to get a similar Lumens rating. When the average candle burns, how does one calculate how much heat energy it is producing per weight of wax, and what is the equivalent light output, in watts, from an electric lightbulb? 4 years ago. I know its kinda like comparing apples and oranges, but a general estimate would be great! When measuring lumens, you can also think of it as the light illuminated in a 1-square-foot area one foot away from a single candle. 2: Enter the value you want to convert (foot-candle). Select Room type. One was listed as 3 watt and another listed as 1 watt. Similarly, if you want to replace your 53W halogen light bulb with a modern LED, the LED will probably use between 9 and 13 Watts of energy. Low energy and highly efficient, this bulb will last approximately 30,000 hours dependant on daily usage. This means the average foot candles to maximum foot candle ratio is very small â meaning â light distribution is extremely even across the entire space. Watts, Lumens, Candles and Lux. In modern usage, candlepower is sometimes used as a synonym for candela. 12.57 lumens Candlepower and lumens measure different light qualities, and 1 candlepower equals 12.57 lumens. clear candle 40w watt small edison screw candle bulb ses // e14 x 10 4.4 out of 5 stars 1,086. This unit is considered obsolete as it was replaced by the candela in 1948, though it is still in common use. Free online illumination converter - converts between 12 units of illumination, including lux [lx], meter-candle [m*c], centimeter-candle [cm*c], foot-candle [ft*c, fc], etc. If your lamp is rated to 25.14 lumens, it has an output of 2 candlepower. This is a conversion chart for foot-candle (Photography units). Lumens Quick Guide Taking a few minutes to determine the recommended lumens per square foot with the method outlined above is ideal. Lumen: A measure of light given off by a source. In the calculator, select Watts to Lumens as the conversion type, enter the value 35 and select the item Light bulb for comparison. Candlepower measures the amount of light produced at the source, which is light intensity. A watt is a unit of power; candlepower is measured in candelas (sometimes called candles), and is a unit of luminous intensity. For example, a 40-watt lamp rated at 500 lumen has a candlepower of (500 ÷ 12.57) = 39.8 cd. With a warm colour temperature and high lumen output, the even distribution and subtle glow will offer a softer version of the clear glass bulb. Lumens give an accurate measure of perceived light output at a given distance from a light source. Watts to Lumens calculator It is a conversion calculator used to convert the electric power in watts (W) to the luminous flux in lumen (lm). By Chris Juden. The initial step is to enter the value of luminous flux in lumens. Thatâs a difference of 42.73 watts. watts W Lumens L million candlepower mcp L/W mcp/W cp/L 25 3200 25 128 1.00 7813 35 3200 15 91 0.43 4688 50 4500 15 90 0.30 3333 50 3200 25 64 0.50 7813 so your lumens per watt varies from 128 to 64, your million cp per W goes from 1 to 0.3 and your cp per lumen varies from 7800 to 3300. It does â¦ Foot-candle: Watt/square centimeter: Note: Fill in one box to get results in the other box by clicking "Calculate" button. Foot-candle â Watt/square centimeter Conversion in Batch. The lumen is a significant entity: it measures the total amount of visible light emitted by a given source. Thanks. Convert candlepower to lumens by multiplying the amount of candlepower by 12.57. To calculate Lumens (Lux) from foot-candles: Lumens = Foot Candles x 10.76 ; To calculate Watts from foot-candles: Watts = Lumens x 0.001496; You can also calculate the number of watts directly from foot-candles by combining both equations & using the following: Watts = Foot Candles x 0.01609696 (since 10.76 x 0.001496 = 0.01609696) The Illuminating Engineering Society, IES, has â¦ The marketing of bike lights bamboozles us with watts, lumens, candela and lux, but doesnât explain what they mean. This Lumen calculation formula is using predefined â¦ To switch the unit simply find the one you want on the page and click it. You can also go to the universal conversion page. The other is 180 lumens per watt. 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. Letâs look at 2 examples. Source(s): brighter 175 lumens 1000 candle power soooooo much: https://bitly.im/s5MKU. Data should be separated in coma (,), space ( ), tab, or in separated lines. Lv 4. 0 0? It might be illustrated, more or less, by the image shown here. Measurement Unit Feet Inches Meters Width Lenth Height Illumination Intensity Low Medium High Wall Color Light Dark Light Placement Center Corners : NOTE: Please choose proper unit of your room area to help us count led lights (Lux and watts calculation) required per square foot/meter/inch. Most of that 80W is actually given out as heat rather than light. Not comparable - as can be shown by a 9 watt compact fluorescent putting out the same number of lumens as 60 watt incandescent. Candlepower, also known as candela, is the fundamental unit of photometry. Even when you do know, it doesnât help much because they each measure different â¦ 1 candlepower = 0.079 lumen. Watt/Square Centimeter (at 555nm) â Foot-Candle. History. 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