Lighting Calculation

Lighting Calculator Calculate the required number of Light fittings, for a specific Room in seconds. Candela to lumens calculator Candela to lux calculator Footcandles to lux calculator Lumens to candela calculator Lumens to lux calculator Lumens to millicandela calculator Lumens to watts calculator Lux to candela calculator Lux to footcandles calculator Lux to lumens calculator Lux to watts calculator Millicandela to lumens calculator Watts to lumens calculator Watts to lux calculator lighting calculation led savings calculator led lighting calculator lighting layout calculator light energy calculator kitchen lighting landscape lighting illumination calculation led light calculator lighting design calculations lighting calculator online room lighting calculator energy saving calculator lighting light bulb cost calculator lighting cost calculator led light savings led light savings calculator led bulb calculator lighting savings calculator lighting calculation formula lighting cost lighting energy savings calculator led lighting savings lighting retrofit calculator light bulb energy calculator energy savings calculator lighting lighting estimator led bulb savings calculator led light bulb savings calculator light fixture calculator lease calculator led lighting energy savings calculator light bulb calculator light bulb savings calculator savings calculator calculator led led light bulb calculator led calculator lighting area calculator led lighting savings calculator fluorescent lighting layout calculator lamp calculator recessed lighting calculator lighting energy saving calculator fluorescent light calculator led bulb energy saving calculator lighting design calculations formula led light energy saving calculator led cost savings calculator led saving calculator light calculator for a room lighting illumination calculation roi calculator for led lighting lighting roi calculator energy saving light bulb calculator office lighting calculator lighting calculation methods light bulb energy savings calculator led light consumption calculator garage lighting calculator lighting facts energy savings calculator for replacing light bulbs led lighting roi calculator lighting layout estimator led lamp calculator outdoor lighting calculator led lighting layout calculator energy of light calculator led power saving calculator lumen calculator led calculator formula lighting savings lighting calculator app simple calculator lighting requirement calculator lux calculation light calculations outdoor lighting calculation calculate lighting illumination calculation formula light bulb calculator cost led light calculator savings calculating energy savings from lighting lighting level calculator Measurement of light or photometry is generally concerned with the amount of useful light falling on a surface and the amount of light emerging from a lamp or other source, along with the colors that can be rendered by this light. The human eye responds differently to light from different parts of the visible spectrum, therefore photometric measurements must take the luminosity function into account when measuring the amount of useful light. The basic SI unit of measurement is the candela (cd), which describes the luminous intensity, all other photometric units are derived from the candela. Luminance for instance is a measure of the density of luminous intensity in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle. The SI unit for luminance is candela per square metre (cd/m2). The CGS unit of luminance is the stilb, which is equal to one candela per square centimetre or 10 kcd/m2. The amount of useful light emitted from a source or the luminous flux is measured in lumen (lm).