Understanding the conversion between watts and lumens is essential for selecting the right lighting solutions. Watts measure the power consumption of a light source, while lumens indicate the brightness or luminous flux emitted. Energy-efficient lighting options, such as LED bulbs, provide higher lumens per watt compared to traditional incandescent bulbs. For instance, an LED bulb consuming 10 watts can produce approximately 800 lumens, whereas an incandescent bulb might require around 60 watts to emit the same brightness. To determine the lumens produced by a specific light source, multiply its wattage by its luminous efficacy (lumens per watt). Conversely, to find the wattage needed for a desired lumen output, divide the lumens by the luminous efficacy. Utilizing a watts-to-lumens calculator simplifies this process, aiding in the selection of lighting that balances energy efficiency with desired illumination levels.