Compact fluorescent lamp wattage equivalents to classic bulb

How many watts should compact fluorescent lamp have to provide the same brightness as 60W, 100W or 150W classic light bulb ? What compact fluorescent lamps wattage is comparable to classic bulb wattage ?

You can find Compact fluorescent lamp and Classic incandescent light bulb efficiency comparison in the table below. The values are approximate, because there are many CFL producers and different product designs available. Brightness is measured in lumens.

The comparison between Compact fluorescent lamp and Classic light bulb wattage is usually explained on the lamp box, so you can compare it when shopping.

Lumens	CFL	Classic bulb
900 lm	13 watts	60 watts
1400 lm	23 watts	100 watts
2300 lm	32 watts	150 watts