Use this calculator to calculate the lumens needed to light a room. These calculations work for typical ceilings that are eight to ten feet high. For taller ceiling heights, please see our chart below. LUMEN/WATT CALCULATOR Select Room type Bedroom Measurement UnitFeetInchesMeters Wid...
How to calculate the lighting needs of a space? How to measure light efficacy? How to calculate the distance of light? How to measure lux levels? How to calculate lumens per watt? And so on… Why do you need to know all this information?
Use our lux/lumens calculator to determine how much light is needed for your industrial lighting application.
Not a measure of brightness; instead, it’s a measure of how much electricity (or energy) a bulb consumes to reach its claimed brightness. Each type of light source, LED, Fluorescent, Halogen, or Incandescent has a different lumen-per-watt ratio. Below we’re going to use lu...
of the luminaire market in recent years. For the lighting design of room concepts, this means that luminosity no longer has anything to do with the WAT specification (i.e. the power consumption of the light source) but rather the required luminous intensity per room is calculated in lumens....
Lumens to lux calculation with area in square metersThe illuminance Ev in lux (lx) is equal to the luminous flux ΦV in lumens (lm) divided by the surface area A in square meters (m2):Ev(lx) = ΦV(lm) / A(m2)For a spherical light source, the area A is equal to 4 times pi...
Calculate how many lumens your type of bulb can create per watt. Choosing the correct wattage of a light bulb might be confusing. There are many parameters and variables to consider. What wattage is enough to create as much light as you need? What type of bulb do you choose for your spe...
What is Lumens? What are the relationships between Candela, Lux, and Lumens? How to calculate Candela, Lux, and Lumens? Conclusion What is Candela? Light intensity measured in candelas. A candela is the amount of light emitted in one steradian from a source with a monochromatic radiation spec...
You can calculate lumens from watts and luminous efficacy. Watt and lumen units represent different quantities, so you can't convert watts to lumens. Watts to lumens calculation formula The luminous fluxΦVin lumens (lm) is equal to the power P in watts (W), times the luminous efficacyηin...
Projector lumens / screen square footage x screen gain = foot-Lamberts What is foot-Lamberts? Yeah, I didn't know what the heck they were the first time I saw that equation, either. Without getting into what for me is a crazy amount of detail and math, let's just say that it is...