How Many Lumens Are In A 25 Watt Incandescent Light Bulb

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.

How many lumens are in a 25 watt incandescent light bulb.

If you prefer brighter light look for more lumens. To replace a 100 watt w incandescent bulb look for a bulb that gives you about 1600 lumens. For example to replace a 25 watt light bulb for a led lamp the amount of lumens must be compared. Energy saving lamps have high luminous efficacy more lumens per watt.

As a rule you ll replace a standard 75 watt bulb with an energy saving bulb of about 1100 lumens. 40w equals 450 lumens 60w equals 800 lumens 75w equals 1100 lumens and 100w equals 1600 lumens. Replace a 75w bulb with an energy saving bulb that gives you about 1100 lumens. Lumens for incandescent bulbs are.

Replace a 60w bulb with an energy saving bulb that gives you about. Watts to lumens calculator lumens to watts calculation formula. Since most household bulbs are 40w 60w 75w or 100w you may be able to memorize their equivalent lumens. Rely on new bulb labeling standards to show lumen output and help you choose the right brightness for your needs.

Some of the most energy to light efficient led bulbs are now reaching over 120 lumens in energy star tests. On average an incandescent bulb produces around 14 lumens per watt compared to 63 lumens for energy saving compact fluorescents cfl and 74 for led bulbs. Examine the label of the led bulbs at the store. In the table below you can easily see how much 25 watt in lumens is and which alternatives you can choose.

On the low end replace a 40 watt bulb with an energy saving bulb of about 450 lumens. P w φ v lm η lm w lumens to watts table. If you want something dimmer go for less lumens.