![]() After calculation the result size will be displayed. First select your desired calculation type and then enter the lumen or candela value and the beam angle of your lamp. The calculator helps you to easily convert between candela and lumens as well as lumens and candela. Heres a question just about anybody whos ever bought a gun light or high-quality handheld light has asked: Whats the difference between lumens and candela. So the lamp with the smaller beam angle has the higher candela value. Now that weve learned about lumens, candela, and lux, lets put it all together: In terms of numbers, 1 candela 12.57 lumens, 1 lumen (ln) 0.8 candela (cd). In case of two lamps with the same lumen value and different beam angles, the luminous flux is distributed over a different solid angle. To even better illustrate the difference between luminous flux (lumens) and luminous intensity (candelas), imagine a light bulb that produces 1 candela or 12,57 lumens, if you cover one side of the bulb it will still produce the same light intensity of 1 candela, but half the luminous flux 6,28lm. The luminous intensity results from the luminous flux related to the solid angle. Roughly speaking, 1/683 watt per steradian is the amount of power needed to generate a candle’s brightness. It then applies this information into the formula of 1 candela 1 lumen/steradian in order to complete the conversion. But a comparison of these values seems to be difficult, because the luminous intensity additionally is direction-dependent. This constant, K cd, is equal to 683 lumens per watta value that makes the modern candela roughly equivalent to the previously defined candela. ![]() Candela Lumen Comparisonīoth values are transmission units. Lumens to candela calculator Candela to lumens calculation. High-lumen lights will have a ton of spill or flood. Especially for highly directional LED bulbs such as spots or LED recessed spotlights, the luminous intensity is sometimes indicated on the packaging or in the data sheet in addition to the luminous flux. Put simply, lumens are the measure of total emitted light, and candela is the measure of light intensity. Now, without getting too bogged down in terminology, this means that you have a method (mean spherical candlepower) when working out lumens vs candlepower. This is the luminous flux emitted in a specific direction in lumens. One lumen is the equivalent of a tiny fraction under 0.08 candela (cd) therefore a flashlight with an output of 600 lumens would have a light intensity of about 48 candelas (cd). ![]() The luminous intensity of a light source is specified in candela. ![]()
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