{"id":118421,"date":"2026-03-26T16:01:43","date_gmt":"2026-03-26T15:01:43","guid":{"rendered":"https:\/\/www.reerlighting.com\/?page_id=118421"},"modified":"2026-04-07T17:49:51","modified_gmt":"2026-04-07T15:49:51","slug":"lux-calculator","status":"publish","type":"page","link":"https:\/\/www.reerlighting.com\/en\/lux-calculator\/","title":{"rendered":"Lux calculator"},"content":{"rendered":"\n\t<section class=\"section\" id=\"section_1769666424\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-1406671090\">\n\n\n\t<div id=\"col-760318804\" class=\"col small-12 large-12\"  >\n\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-553346978\" class=\"text\">\n\t\t\n\n<h2>Simplified Lux Calculator<\/h2>\n\t\t\n<style>\n#text-553346978 {\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row align-center\"  id=\"row-2126397297\">\n\n\n\t<div id=\"col-1021171828\" class=\"col pb-0 small-12 large-12\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-2207274903\" class=\"text\">\n\t\t\n\n<p>Finding the right lighting for a space doesn&#8217;t have to be a lengthy process or reserved only for experts. <br \/>Whether you&#8217;re planning the lighting for an office, a shop, or an area of \u200b\u200byour home, knowing exactly how many fixtures you need\u2014and most importantly <b data-path-to-node=\"4\" data-index-in-node=\"271\">how to arrange them<\/b>\u2014is the secret to achieving a comfortable result and avoiding dark areas.<\/p>\n\t\t\n<style>\n#text-2207274903 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1769666424 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_1238142671\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-11363496\">\n\n\n\t<div id=\"col-787055204\" class=\"col pb-0 medium-6 small-12 large-6\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p data-path-to-node=\"5\">We developed this calculator to give you a quick and reliable estimate, without having to use complex simulation software. By entering the room dimensions and the product&#8217;s technical data, you&#8217;ll immediately get two key indicators for your project:\r\n\r\n<ul data-path-to-node=\"6\">\r\n<li>\r\n<p data-path-to-node=\"6,0,0\"><b data-path-to-node=\"6,0,0\" data-index-in-node=\"0\">Average Illuminance (Lux):<\/b> This tells you whether the overall amount of light is sufficient for the intended use of the room (e.g., 500 lux is ideal for working, 150 lux is sufficient for a passageway).<\/p>\r\n<\/li>\r\n<li>\r\n<p data-path-to-node=\"6,2,0\"><b data-path-to-node=\"6,2,0\" data-index-in-node=\"0\">Uniformity (U0):<\/b> This is the parameter that makes the difference between a good project and a poor one. By choosing the exact arrangement of your fixtures (for example, a 2&#215;2 grid or a 4&#215;1 line), the calculator cross-references the beam angles to tell you whether the light will be uniform across the entire surface.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-path-to-node=\"6,2,0\"><b data-path-to-node=\"7\" data-index-in-node=\"0\">How to use it?<\/b> <br \/>Keep the technical data sheet of the light fixture you want to install handy. You&#8217;ll need three key data points: the <b data-path-to-node=\"7\" data-index-in-node=\"123\">Lumens<\/b>, the <b data-path-to-node=\"7\" data-index-in-node=\"145\">Beam Angle in Degrees<\/b>, and the <b data-path-to-node=\"7\" data-index-in-node=\"174\">cd\/klm<\/b> value. Enter these along with your room measurements and play around with the amounts until the Uniformity indicator passes the critical threshold of 0.40 (and stops flashing red).<\/p>\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-310222171\" class=\"col pb-0 medium-6 small-12 large-6\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1309109084\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner image-cover dark\" style=\"padding-top:56.25%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"642\" height=\"362\" src=\"https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/Tavola-disegno-1-copia-2.jpg\" class=\"attachment-original size-original\" alt=\"\" srcset=\"https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/Tavola-disegno-1-copia-2.jpg 642w, https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/Tavola-disegno-1-copia-2-300x169.jpg 300w, https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/Tavola-disegno-1-copia-2-500x282.jpg 500w\" sizes=\"auto, (max-width: 642px) 100vw, 642px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1309109084 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-3663227559\" class=\"text hidden\">\n\t\t\n\n<h3 style=\"text-align: center;\"><strong>Room calculator with appliance quantity<\/strong><\/h3>\n\t\t\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n\n<\/div>\n\t<div id=\"gap-1895617492\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1895617492 {\n  padding-top: 70px;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1238142671 {\n  padding-top: 0px;\n  padding-bottom: 0px;\n  min-height: 80px;\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_143237723\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-1164373640\">\n\n\n\t<div id=\"col-680003602\" class=\"col pb-0 small-12 large-12\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1705530968\" class=\"text\">\n\t\t\n\n<h3>Product data example<\/h3>\n\t\t\n<style>\n#text-1705530968 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-1201881810\">\n\n\n\t<div id=\"col-1028442157\" class=\"col pb-0 medium-6 small-12 large-6\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p data-path-to-node=\"5\">Where can I find the <strong>flux<\/strong> (<strong>lm<\/strong>)?<\/p>\r\n<p data-path-to-node=\"5\">In the example: 3600 lumens<\/p>\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1711163149\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner image-zoom image-cover dark\" style=\"padding-top:50%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"650\" src=\"https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/FLUSSO-SCHEDA-TECNICA-e1774600979963.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/FLUSSO-SCHEDA-TECNICA-e1774600979963.jpg 1000w, https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/FLUSSO-SCHEDA-TECNICA-e1774600979963-300x195.jpg 300w, https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/FLUSSO-SCHEDA-TECNICA-e1774600979963-768x499.jpg 768w, https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/FLUSSO-SCHEDA-TECNICA-e1774600979963-500x325.jpg 500w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1711163149 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-396625395\" class=\"col pb-0 medium-6 small-12 large-6\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p data-path-to-node=\"5\">Where to find the beam angle (\u00b0)?<\/p>\r\n<p data-path-to-node=\"5\">In the example: 90\u00b0 beam<\/strong><\/p>\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1714099393\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner image-zoom image-cover dark\" style=\"padding-top:50%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"650\" src=\"https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/GRADI-FASCIO-SCHEDA-TECNICA-e1774601120112.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/GRADI-FASCIO-SCHEDA-TECNICA-e1774601120112.jpg 1000w, https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/GRADI-FASCIO-SCHEDA-TECNICA-e1774601120112-300x195.jpg 300w, https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/GRADI-FASCIO-SCHEDA-TECNICA-e1774601120112-768x499.jpg 768w, https:\/\/www.reerlighting.com\/wp-content\/uploads\/2026\/03\/GRADI-FASCIO-SCHEDA-TECNICA-e1774601120112-500x325.jpg 500w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1714099393 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_143237723 {\n  padding-top: 0px;\n  padding-bottom: 0px;\n  min-height: 80px;\n}\n<\/style>\n\t<\/section>\n\t\n\t<div id=\"gap-2103046120\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-2103046120 {\n  padding-top: 70px;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<section class=\"section\" id=\"section_2109012723\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"text-center\"><div class=\"is-divider divider clearfix\" style=\"max-width:1000px;\"><\/div><\/div>\n\n\t<div id=\"gap-872198199\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-872198199 {\n  padding-top: 70px;\n}\n<\/style>\n\t<\/div>\n\t\n\n<div class=\"row align-center\"  id=\"row-1938154136\">\n\n\n\t<div id=\"col-1003818961\" class=\"col pb-0 medium-6 small-12 large-6\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-384062925\" class=\"text\">\n\t\t\n\n<h3 style=\"text-align: center;\">In base ai LUX desiderati<\/h3>\n\t\t\n<style>\n#text-384062925 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-1814849395\">\n\n\n\t<div id=\"col-2081157366\" class=\"col small-12 large-12\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1977148550\" class=\"text\">\n\t\t\n\n<p><iframe id=\"lineo-iframe\" style=\"width: 100%; height: 1200px; border: none; overflow: hidden; transition: height 0.4s ease;\" src=\"https:\/\/www.reerlighting.com\/reerlighting-assets\/tools\/CALCOLATORE CON LUX TARGET.html\"><\/iframe><\/p>\n\t\t\n<style>\n#text-1977148550 {\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-2002629731\" class=\"col pb-0 medium-6 small-12 large-6\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1665742235\" class=\"text\">\n\t\t\n\n<h3 style=\"text-align: center;\">In base al numero di apparecchi<\/h3>\n\t\t\n<style>\n#text-1665742235 {\n  text-align: left;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-25848654\">\n\n\n\t<div id=\"col-141626394\" class=\"col small-12 large-12\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-3789408605\" class=\"text\">\n\t\t\n\n<p><iframe id=\"lineo-iframe\" style=\"width: 100%; 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