View Full Version : Conversion watts to candlepower

Nov 16, 2006, 05:06 PM
I need to know how much wattage is 80 candlepower?

Nov 16, 2006, 06:35 PM
It varies widely depending on the type of light. Many light bulb packages give watts and lumens. To convert lumens to candle power, see http://www.ex.ac.uk/cimt/dictunit/dictunit.htm#PQ Or perhaps you will have to dig up a CRC handbook of chemistry and physics for candlepower.

Nov 16, 2006, 06:38 PM
You can't really convert candlepower to watts. Watts is an input measurement and candlepower is an output measurement. You could actually have a 2 watt bulb that puts out the same candlepower as a 3 watt bulb. It has to do with a lot of things like efficiency, reflection, etc. Candela, on the other hand has a direct relationship to watts. Check out this recent discussion which includes some links to good information on candlepower, candela, foot-candles, lumens, lux etc.: LED Flashlights: Lumens, Candlepower & lux (http://www.askmehelpdesk.com/electrical-lighting/led-flashlights-lumens-candlepower-lux-40375.html)

Mar 12, 2012, 07:03 PM
1 candle power = 12.57 lumens