Fluorescent Light Wattage Equivalent

P w φ v lm η lm w lumens to watts table.

Fluorescent light wattage equivalent.

A 9 watt fluorescent bulb in this case is equal to a 40 watt incandescent bulb. For example a correct replacement for a 60w incandescent bulb would be a 15 watt cfl bulb 60 1 4 15. Leds require less wattage than cfl for the same amount of light. Instead of focusing on wattage which measures power or energy use manufacturers are indicating the brightness of their energy efficient bulbs according to lumens which measure light output.

The easiest way to figure out what bulb you need is by using an incandescent led conversion cart. Watts to lumens calculator lumens to watts calculation formula. Energy saving lamps have high luminous efficacy more lumens per watt. The chart below illustrates the amount of brightness in lumens you can expect from different wattages of light bulbs.

Choose between warm and cool light. Lps are more efficient than hps but emit a very dim yellow light. Linear replacement universal fit led tube light bulb bright white 3000k 2 pack price. Differences will also occur between types and sizes of light bulbs.

Lumen wattage comparison. While the math for the cfl bulbs is simple the led bulbs are even more energy efficient and durable than compact fluorescent light bulbs. Read the package to choose desired illumination level. Led bulbs require much less wattage than cfl or incandescent light bulbs which is why leds are more energy efficient and longer lasting than their competitors.

Color temperature measurement is in kelvin k and most colors range from 2500 to 6500k a lower kelvin figure means the color is warm and tends to be closer to orange. By contrast a high kelvin figure like 4000k means the color is cool and white in appearance. Linear t5 instantfit led tube light bulb daylight 5000k 48 in. But as energy efficient low watt light bulbs like cfls and leds have become readily available watts have become an unreliable metric for selecting bulbs.

The power p in watts w is equal to the luminous flux φ v in lumens lm divided by the luminous efficacy η in lumens per watt lm w. 32 watt t8 40 watt t12 4 ft. Say you normally use a 60 watt incandescent bulb for example. If you are going to replace fluorescent light with led lighting you must take into consideration the color temperature.

Bulbs only come in certain wattages which make equivalent versions slight different. Around 20 to 20 watts in a fluorescent bulb is the same as 100 watts in an incandescent bulb. For example a 3w led is equivalent in output to a 45 w incandescent.