How does lumens compared to candlepower

He is a scientist, lawyer, and student, and has been working in criminal and civil law since He holds a Juris Doctor and a Bachelor of Arts in linguistics with a concentration in computer science. Things You'll Need. How to Calculate Light Intensity.

How to Convert Foot-Candles to Lux. How to Convert Lux to Candela. How to Calculate Illuminance. How to Calculate Efficacy. Log In FAQ. We detected that your JavaScript seem to be disabled. You must have JavaScript enabled in your browser to utilize the functionality of this website. Avoid any hold time, let us call you! Order number. Product Category. What's your issue? Call back in 5 minutes 15 minutes 30 minutes 1 hour 1.

Please enter Order. Track it! One candela has a light intensity of The inverse, or:. One lumen has a light intensity of 0. A spotlight with a light output of lumens has a light intensity of 48 cd. A spotlight with a light intensity of 3,, cd has a light output of about 37,, lm. Determining the lumen and candela ratings for a light fixture provides insight to the utility of a light for a specific task. A lumen rating for a spotlight tells how much illumination can be expected from the exposed portion of the bulb.

A spotlight with a high lumen rating produces light that illuminates a wide area near the bulb. A candela rating tells more about how far the light will be visible from a distance.

A spotlight with a high candela rating can shine a narrow, focused beam of light a great distance but does not illuminate the area surrounding the bulb very much. Consumers may be more accustomed to buying light fixtures and bulbs measured in watts than lumens. However, watts are not useful for determining the brightness of a light because they measure the power usage, not light output of a bulb.

The conversion of lumens to watts varies according to the type of bulb used and its level of efficiency. She worked as a researcher and analyst in the biotech industry and a science editor for an educational publishing company prior to her career as a freelance writer and editor.