The online calculator will help you to find a reference point for your lighting design.
Now you know the correlation between lux and lumens in connection with distance and angle.
#Candela lumen calculator professional#
In order to ensure homogeneous lighting with a corresponding lux value, a professional light planning should be involved. The positions of the individual lights are chosen in a way that the light cones overlap. So the illuminance in the light circle is not homogeneous.įor the complete illumination of rooms or specific areas with a minimum illumination intensity, in most cases several LED luminaires are used. Especially in the peripheral areas, the luminous intensity usually decreases. When using a single light source, it should be noted that the light distribution of many LED spotlights does not always have to be uniform within the beam angle. After a click on the Calculate button you will see the size of the illuminated area and the lux value. Select Lumen to Lux in the calculator and enter 470 as the lumen value, 110 as the beam angle and 6.5 for the distance. You want to find out how much lux the table is illuminated with. It does not store any personal data.Example: A spotlight with a beam angle of 110° and a light output of 470 lumens is mounted at a height of 6.5 ft above a table. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is used to store the user consent for the cookies in the category "Other. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Luminous Flux (Lm): The luminous flux is a measure of the total light output from a source. Necessary cookies are absolutely essential for the website to function properly. Notes: Illuminance (lux): Illuminance is a measurement of the light intensity at any point.The light intensity drops exponentially the further away you get from the source (distance). The result is then divided by the square distance from the light source in square feet.Įv (lx) = I v (cd) / (d (m)) 2, which means that the illuminance in lux is computed by dividing the luminous intensity in candela by the square distance from the light source in square meters. This calculator uses particular formula in executing the conversions.įormula of calculating candela to lux FeetĮv (lx) = 10.76391 x I v (cd) / (d (ft)) 2, which means that the illuminance in lux is calculated by multiplying 10.76391 by the luminous intensity in candela. Remember to select the feet or meters for accurate results. If you were calculating the illuminance result using 540 cd and 40 meters (m), the result will be 0.3375. Select feet as the unit of measurement before you click on the ‘Calculate’ button.
If you are using the calculator, you will enter 540 in the first text field for luminous intensity in candela and 40 as the distance respectively. If the luminous intensity in candela is 540 (cd) with a distance of 40 feet, find the illuminance result in lux. Before you perform new calculations, you will use the ‘Reset’ button to erase all the previous data from the text fields.
The illuminance result in lux will be displayed below the two controls. Afterwards, click on the ‘Calculate’ button to initiate the conversion. Proceed to the second text field and enter the distance before selecting the feet or meters. The first step is to enter the luminous intensity in candela. This calculator is equipped with two controls, the ‘Calculate’ and ‘Reset’ buttons that perform different functions. It is a conversion calculator that converts the luminous intensity in candela (cd) to illuminance in lux (lx).
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