Convert between lumens and watts for incandescent, halogen, CFL and LED lightbulbs.

The power P in watts (W) is equal to the luminous flux ΦV in lumens (lm), divided by the luminous efficacy η in lumens per watt (lm/W):

October 31, 2023 - Our watts to lumens & lumens to watts conversion chart covers calculations for all bulb types and ranges from 100 lumens to 10000 lumens

September 10, 2024 - When we pay our electricity bill, we are paying for the watts we use. Since we have traditionally used incandescent light bulbs, we are accustomed to using watts as a unit of brightness, but this is incorrect. The measure of the brightness of a light fixture is lumens, not watts.

Learn how to convert lumens to watts to pick the perfect LED bulb, and boost energy efficiency with helpful tips and detailed conversion charts.

May 1, 2025 - A comprehensive chart converting Lumens to Watts for LED, incandescent, and halogen lightbulbs, accompanied by a table demonstrating luminous efficacy conversion.

June 27, 2024 - If a light bulb emits 1000 lm and has a luminous efficacy of 20 lm/W, the value in watts will be 1000 lm ÷ 20 lm/W = 50W. ... If you have a 75W incandescent bulb and the lumens per watt value is 15 lm/W, the lumens will be equal to 75W × 15 ...

Learn to compare lumens to watts and how newer LED bulbs and lamps compare to the traditional incandescent, metal halide, and fluorescent lamp wattages.

May 22, 2025 - Traditional incandescent and halogen bulbs are the least efficient options available. To achieve 6000 lumens, an incandescent bulb would require around 500 watts, while halogen bulbs would consume approximately 300 to 400 watts.

November 29, 2024 - Learn how to convert lumens to watts, choose the right LED bulbs, and maximize energy efficiency with our detailed guide and conversion charts.

March 3, 2025 - In this guide, we’re going to teach you everything you need to know when it comes to converting lumens to watts.

The luminous flux ΦV in lumens (lm) is equal to the power P in watts (W), times the luminous efficacy η in lumens per watt (lm/W):

July 23, 2024 - How Many Lumens in a Watt? · LED: Lumens = Watts x 80 · CFL: Lumens = Watts x 70 · Halogen: Lumens = Watts x 20 · Incandescent: Lumens = Watts x 15. Discover the key to choosing the right LED bulbs by understanding the lumens to watts conversion.

Lumen and watt units represent different quantities, so you can't convert lumens to watts.

LED Bulbs: Energy-efficient LED bulbs can produce the same 6000 lumens with significantly lower wattage, typically around 30-40 watts. Understanding the lumens-to-watts conversion is vital in commercial lighting for several reasons:

Lumens per watt means the efficiency of converting energy (watts) into light (lumens). The conversion efficiency of old tungsten incandescent lamps is about 15~20 lumens per watt, but new LED light fixture can achieve the conversion efficiency to 70~110 lumens per watt.

Example 1: You see an offer for an LED torchiere. The light output is 1800 lumens and you want to know how bright it is compared to an old halogen torchiere. In the calculator you have to select Lumens to Watts as conversion type, enter the value 1800 and select the item Halogen lamp as comparison type.

December 21, 2024 - Home Lighting: Suppose you need to choose a lighting fixture for the living room, which requires 1600 lumens of light. If you choose an LED light with a light efficiency of 100 lm/W, you will need a 16-watt LED light.

For an LED bulb, producing 1,300 lumens will require around 15 watts of power. However, for a less-efficient halogen bulb, over 60 watts of power are likely to be required to produce the same brightness.