Occasionally the question comes up about candle power and wattage when selecting bulbs for a particular usage. First of all there is no direct correlation between the two. This is because some lamps/bulbs are more efficient at producing light then others even with the same voltage and amperage applied. However I did find a general guide that can be used to help select the lamp/bulb you want for a particular application.
2W ~ 3cp
6W ~ 9cp
10W ~ 15cp
16W ~ 21cp
25W ~ 32cp
35W ~ 50cp
Thanks Gary, candle power is very unfamiliar to me in Europe, all automotive and other bulbs has always been marked in watts over here.
Now with LED lamps being more common, bulbs for indoor use are marked with lumen too - maybe there are a conversion table between cp and lumens..
Yep. Here's something:
"Converting Lumen to Candlepower
Convert lumens to candlepower by dividing the light source's brightness in lumens by 12.57. For example, a lamp rated at 50 lumens would be rated at 3.978 candlepower."
Some additional trivia one candle power is determined by the amount of light emitted from one candle on a piece of white paper 12 inches away.
I don't know much about it but I don't see how there can be more than a general correlation between wattage (energy consumption) and candle power because there are too many variables. You would at the very least have to define the type of lighting, incandescent, flouresscent, (sp.?) etc., not to mention the efficiency of the device.