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Watts To Lumens Formula:
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Watts to lumens conversion is a method used to determine the luminous flux (lumens) produced by a light source based on its power consumption (watts) and efficiency (lumens per watt). This conversion helps in comparing the brightness of different light sources regardless of their energy consumption.
The calculator uses the simple formula:
Where:
Explanation: The formula multiplies the power consumption by the efficacy to determine the total light output in lumens.
Details: Calculating lumens is essential for selecting appropriate lighting for different applications, ensuring adequate illumination while optimizing energy efficiency. It helps in comparing different lighting technologies and making informed decisions about lighting solutions.
Tips: Enter the power consumption in watts and the efficacy in lumens per watt. Both values must be positive numbers. The calculator will compute the total luminous flux in lumens.
Q1: What is the difference between watts and lumens?
A: Watts measure power consumption, while lumens measure light output. Higher lumens mean brighter light, while higher watts mean more energy consumption.
Q2: What are typical lumens per watt values for different light sources?
A: Incandescent bulbs: 10-17 lm/W, CFL: 50-70 lm/W, LED: 80-120+ lm/W. Values may vary by specific product and technology.
Q3: Why is lumens per watt important?
A: Lumens per watt (efficacy) indicates how efficiently a light source converts electricity into visible light. Higher values mean more light output for the same energy consumption.
Q4: Can I use this calculator for all types of light bulbs?
A: Yes, this calculator works for any light source as long as you know the power consumption and efficacy values.
Q5: How many lumens do I need for a room?
A: Room lighting needs vary by size and purpose. Generally, living rooms need 10-20 lumens per square foot, kitchens 30-40, and task lighting 50-75 lumens per square foot.