Candle power is a little bit of a dated term in the flashlight world. More accurately is a term called lumens. A simple analogy between candle power and lumens is as follows: if you were to pour out a bag of sugar on a table the peak of the mound would be candle power and the overal amount poured would be lumens. So to answer your question candle power and lumens are not interchangeable, but related. This light probably has about 20-30 lumens. However, candle power for this light is not an accurate measure of true ouput becuase if you are within a few feet the beam is very bright and concenterated, but as you move away to say even 20 feet your candle power will be much less. For comparison sake, remember the old incandescent 3 cell Maglite. This had about 20,000 candle power and about 40-60 lumens. One last note, unlike the old incandescent lights, this is an LED which has a perfect beam, no artifacts, and does not have the O-ring in the middle or anything like the days of the incandescents and poor reflectors.