Spread (m): The spread is the width of the light when it hits the flat surface.Ĭoverage Area (m 2): The coverage area is the size of the circular area that the light illuminates on the flat surface. Enter the distance and beam angle and click 'Calculate'. Here you can calculate the light spread as the diameter of the resulting 'spot' of light and the coverage area, from the beam angle and distance to the surface. A change in the beam angle affects the luminous intensity (lux) of a light source but not the luminous flux (Lumens). For example a beam angle on 30 degrees means the light has a shape of a cone and its borders form a 15 degree angle with the center axis. For example, a 1 candela light source will product 1 lumen per square meter at the distance of 1 meter.īeam Angle: The beam angle is the angle of radiation for a light source. Luminous Flux (Lm): The luminous flux is a measure of the total light output from a source. The light intensity drops exponentially the further away you get from the source (distance). Illuminance (lux): Illuminance is a measurement of the light intensity at any point. Enter the distance and beam angle, then either enter a Lumens value and click 'Convert to Lux' or a Lux value and click 'Convert to Lumens'. To put it simply, the lumen rating is how much total visible light is produced by a light source. The lumen (lm) is a measurement of luminous flux, or the total amount of visible light. Your value gets instantly converted to all other units on the page. Enter the value you want to convert (foot-lambert). You can also go to the universal conversion page. To switch the unit simply find the one you want on the page and click it. Here you can convert a lumens value from a product to a lux value if you know the beam angle and measurement distance. Candela to lumens Lumens are now the most common measurement for a light bulb. This is a conversion chart for foot-lambert (Other units). If you require a different room type, please contact us. Room Type: Supplied are a small list of typical room types and their recommended illuminance levels. For operation of 12V LED lamps and spotlights on the mains a power supply or transformer. How to Choose an LED Power Supply With Transformer Calculator. Illuminance in lux plays a major role in the planning of lighting installations. Notes: Lux: Lux (Illuminance) is a measurement of the light intensity at any point. Lux To Lumens Conversion Easy To Use Calculator Tool. Enter the room size, select the type and choose a light. Here you can calculate the number of lights required in a room based on the type and size of room. If you need help working out something we don’t have a calculator for, contact us. Use these calculators to work out what you need, before you buy.
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