How Many Lumens Is A Standard 100 Watt Light Bulb

The luminous flux φ v in lumens lm is equal to the power p in watts w times the luminous efficacy η in lumens per watt lm w.

How many lumens is a standard 100 watt light bulb.

Energy efficiency requirements beginning january 1 2012 all across the nation companies will no longer be able to sell or manufacture 100 watt light bulbs. φ v lm p w η lm w watts to lumens calculation. According to new u s. According to energy star a standard 100 watt incandescent light bulb emits 1 600 lumens of visible light.

If you want something dimmer go for less lumens. If you prefer brighter light look for more lumens. Use this chart to determine how many lumens you ll need from your next light bulb. Leds require less wattage than cfl for the same amount of light.

Energy saving lamps have high luminous efficacy more lumens per watt. For example if you typically purchase 60w incandescent bulbs which produce about 700 800 lumens consider purchasing a lower energy alternative like a 42w halogen bulb 12w cfl or even a 10w led bulb to achieve the same brightness. The current 100 watt incandescent bulb is the equivalent of about 1600 lumens. In the table below you can easily see how much 100 watt in lumens is and which alternatives you can choose.

Dimmable from 100 to 10 these bulbs have a 200 degree beam angle to cast light in a wide area. Energy saving bulbs such as compact fluorescent lamps and led bulbs that produce an equivalent lumens as the 100 watt incandescent bulb use only 24 to 25 watts of energy. How many lumens is equivalent to a 100 watt light bulb. Designed for bathroom vanities or anywhere a globe bulb is required these bulbs produce light equivalent to a 40 watt incandescent bulb yet only consume 10 watts of power.

As a rule you ll replace a standard 75 watt bulb with an energy saving bulb of about 1100 lumens. A 100 watt incandescent bulb gives off 1 600 lumens. On the low end replace a 40 watt bulb with an energy saving bulb of about 450 lumens. The brightness or lumen levels of the lights in your home may vary widely so here s a rule of thumb.

While the math for the cfl bulbs is simple the led bulbs are even more energy efficient and durable than compact fluorescent light bulbs. Lumens to watts calculator watts to lumens calculation. Rely on new bulb labeling standards to show lumen output and help you choose the right brightness for your needs. Watts measure the electrical energy required to light a bulb while lumens are a measure of the brightness of the light produced.

The luminous efficacy of an incandescent light bulb is set at 16 lumens per 1 watt.