How many watts are in 190 lumens?

The conversion from lumens to watts isn't direct, as lumens measure light output while watts measure energy consumption. The efficiency of the light source affects the conversion; for example, an LED bulb typically produces about 80-100 lumens per watt. Therefore, 190 lumens would require approximately 2-2.4 watts if using an LED bulb, but this can vary with different types of bulbs.