Sounds like you are asking about Luminous Efficacy, which is lumens per Watt. Wikipedia has a whole page on this with examples . Incandescent lights are roughly 15 lumens per watt. Halogen 20 lumens per watt. LEDs light bulbs are generally 100-110 lm/W, although entertainment fixtures are only 30-50 lm/W for some reason. Answer from RexKoeck on reddit.com
The Calculator Site
thecalculatorsite.com › energy › watts-lumens.php
Watts to Lumens Converter
Convert between watts and lumens for incandescent bulbs, halogen bulbs, CFL and LED.
RapidTables
rapidtables.com › calc › light › watt-to-lumen-calculator.html
Watts to lumens (lm) conversion calculator
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):
wattage to lumen formulas?
Sounds like you are asking about Luminous Efficacy, which is lumens per Watt. Wikipedia has a whole page on this with examples . Incandescent lights are roughly 15 lumens per watt. Halogen 20 lumens per watt. LEDs light bulbs are generally 100-110 lm/W, although entertainment fixtures are only 30-50 lm/W for some reason. More on reddit.com
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August 11, 2023Confused about Lumens and Watts conversion in IKEA description for GU10 LED bulb
While there are ROUGH numbers you can look at, in the end wattage is the energy used, and lumens are the amount of visible light. They're not going to translate and it's unfortunate that wattage was always associated with how bright a light is at this point. Your best bet is to compare lumens to lumens. More on reddit.com
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September 24, 2022Question? Major LED manufacturers broke over 300 lumens per watt in 2014. So why do we still have LED’s that take over 8 watts to get 800 lumens?
Also the quality of the LED plays a big factor, CRI 70 LED is much easier to get efficient then CRI90+ More on reddit.com
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February 24, 2021Tungsten / HMI / LED - Wattage Conversion question.
Most reputable companies list the metrics of their product's light output. Mole and Arri do at least. http://www.arrirental.de/lighting/photometric-calculator/ As a general guideline, HMI's offer about 4x the light output per watt compared to tungsten units. Your mileage will definitely vary, though, because every light spots and floods differently and has varying degrees of uniformity to their light output. I've found that there is a bit of padding on the part of manufacturers with their stated equivalencies of their LED fresnels to actual tungsten fresnels. They'll usually claim that the LED fresnel is "equivilent to a 1k/2k/5k," ect, and the actual output is usually quite a bit less. That's not a horrible trade off considering you can now plug a "5k" LED lamp into a wall outlet. The Sola 6 has the output of a 650w fresnel based off a quick search. Another thing to keep in mind is how the light output scales with wattage between different types of light fixtures. With tungsten, there is a significant jump in output between a 5k and a 10k or a 10k and a 20k. With HMI's, the difference between a 12k and an 18k is pretty minimal. Maybe about a 1/2 stop. I'm not sure how LED compares to these two, however, since the wattage of LED's isn't able to go very high. More on reddit.com
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January 16, 2016Videos
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💡 Watts vs Lumens: The New Lighting Standard You Need to Know!
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LED Lumens to Watts | Bulb Series - YouTube
05:09
How To Chose LED Bulbs | Kelvin, Lumens, & Watts EXPLAINED! - YouTube
Any-lamp | Switch to LED | Lumen to Watt
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Lumens per Watt & LED Efficacy - Aurora Lighting Presents - YouTube
Thecanconverter
thecanconverter.com › how-to-convert-lumens-to-watts
How to Convert Lumens to Watts? -
May 4, 2023 - But energy-efficient light bulbs use less wattage than incandescent bulbs. To achieve the same number of lumens as a 100 watt incandescent bulb, a 1500 lumens LED light will use just 13 watts of power!
Northerncult
northerncult.com › home › lighting blogs › watts to lumens calculator – shedding light on illumination
WATTS TO LUMENS CALCULATOR – SHEDDING LIGHT ON ILLUMINATION
August 28, 2025 - For LED bulbs, a rough estimate is around 20 lumens per watt. Therefore, 2000 lumens would be approximately equivalent to 100 watts. Again, the conversion from watts to lumens varies depending on the type of bulb.
Reddit
reddit.com › r/lightingdesign › wattage to lumen formulas?
r/lightingdesign on Reddit: wattage to lumen formulas?
August 11, 2023 -
I am much closer to retirement than college. I have worked in film lighting for almost all of it but started in theater. We called things, 1K, 575, 1200, 2k, 5k, 10k, 20k, but that is outdated now, and admittedly a bad system. When I hear that a unit is Eleventy point five hundred lumens it has NO, (and I mean none) useful information. Is it like a candle? is it like the Sun? is it a like a oncoming headlight? or the light over a seat on a plane?
Is there a formula or even a rule of thumb that will translate the new terms into something I am more familiar with? Thank You!
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Sounds like you are asking about Luminous Efficacy, which is lumens per Watt. Wikipedia has a whole page on this with examples . Incandescent lights are roughly 15 lumens per watt. Halogen 20 lumens per watt. LEDs light bulbs are generally 100-110 lm/W, although entertainment fixtures are only 30-50 lm/W for some reason.
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All the old wattage to output metrics used to make more sense because you were just putting brighter lamps behind the same lens. There are so many more variables now in terms of lamp type, beam angle, optics etc... Like a 200 watt sharpy is going to appear brighter than a 1200 watt Viper Profile. With all the different lamp sources and optical setups you really just have to do a shootout. Even spec sheets can be deceiving because different manufacturers don't measure output the same way.
LEOTEK
leotek.com › watts-to-lumens
Watts to Lumens, Lumens to Lux: The Ultimate Guide to Understanding Lighting Performance - LEOTEK
February 7, 2025 - Modern LED lighting requires us to look beyond wattage. The concept of luminous efficacy helps bridge the gap between power consumption and light output. Luminous efficacy is the ratio of luminous flux (lumens) to power consumption (watts) and is expressed in lumens per watt (lm/W). A higher efficacy value means the light source is more efficient at converting energy into visible light.
EMILUM GmbH
emilum.com › home › compare lumens to watts and convert
Convert lumens to watts and compare with table
July 21, 2025 - The same line shows that it emits around 700 lumens of light. You will then see that an LED light source of the same brightness requires only 6W. The saving of 54 watts can therefore be achieved by simply replacing the light source.
VOLT
voltlighting.com › volt® lighting › learn › lumens to watts conversion chart for led bulbs
Lumens to Watts Conversion Chart: Choose the Right LED Bulb
We see these lumen numbers on the ... all new LED bulb packages. It may take a while to get used to using lumens instead of watts, but it’s important in order to make the best lighting choices. Now that we understand watts and lumens, we can use both terms to come up with lumens per watt or “efficacy” (or “luminous efficacy”). This is a measure of how well a light source converts energy (watts) ...
Published January 31, 2024
General Lamps
lamps-on-line.com › watts-to-lumens
Watts to Lumens Conversion Chart | What Wattage Do You Need?
Similarly, if you want to replace your 53W halogen light bulb with a modern LED, the LED will probably use between 9 and 13 Watts of energy. In each case, the important factor when choosing the replacement is to get a similar Lumens rating. To replace the 40W incandescent with a CFL you’d be looking for one with about a 400 Lumen output.
The Calculator Site
thecalculatorsite.com › energy › lumens-watts.php
Lumens to Watts Converter
Convert between lumens and watts for incandescent, halogen, CFL and LED lightbulbs.
LEDVANCE
ledvanceus.com › blog › Pages › What-is-the-Equivalent-Wattage-for-LED-Bulbs.aspx
What is the Equivalent Wattage for LED Bulbs | LEDVANCE
September 27, 2024 - From the table, a 9-watt incandescent bulb is equivalent to a 1-watt LED bulb. A 60-watt LED equivalent is 7-9 watts. A 100-watt incandescent bulb produces 1600 lumens of light, while a 12-14 watt LED gives off the same.
Sust-IT
sust-it.net › incandescent-bulbs-lumens-to-watts-conversion-led.php
Lumens to Watts incandescent bulbs calculator LED, CFL Energy Savers & Halogens
An equivalent compact fluorescents (CFL) bulb in light output (lumens) should consume only around 7 watts and LEDs approximately 6 watts.
Anker SOLIX
ankersolix.com › anker solix › blog center › power stations › lumens to watts
How to Convert Lumens to Watts: Energy Saving Tips - Anker SOLIX US
July 19, 2024 - In comparison, a modern 10-watt LED bulb can produce the same 800 lumens. This demonstrates that while watts reflect energy consumption, lumens reflect brightness. Therefore, by focusing on lumens, consumers can select lighting that provides ...
Disabled World
disabled-world.com › home › calculators - charts
Lumens, Watts, and LED Conversion Charts - #DisabledWorld
May 1, 2025 - See the chart below for further ... per watt, compared to 63 lumens for energy saving compact fluorescents (CFL) and 74 for LED bulbs....
Jackery
jackery.com › home › how to convert lumens to watts
How to Convert Lumens to Watts - Jackery
5 days ago - The luminous flux in lumens is equal to the power in watts times the luminous efficacy in lumens per watt: ... If the LED bulb has a wattage of 30W and the lumens per watt value is 80, the wattage to lumens can be calculated as:
Aidot
aidot.com › blog › post › convert-lumens-to-watts
How to Convert Lumens to Watts?
July 4, 2023 - So, if you have a 60-watt incandescent bulb, it’s giving you about 600 lumens. If you want the same brightness from an LED, you’d look for one that’s around 8 watts (600 lumens divided by 80 lumens per watt).
Lumens to Watts Conversion Chart
blog.feslighting.com › lumens-to-watts
Lumens to Watts Conversion Chart (from 100 to 10000 Lumens)
October 31, 2023 - It is particularly useful for understanding watts to lumens conversion for the most popular types of bulbs. With this at your fingertips, you will be better equipped to select the best lighting solutions, enhancing efficiency while reducing costs. You'll see that switching to LED lights isn't ...
Alcon Lighting
alconlighting.com › home › lumens calculator: how to determine total required lumens for your space
How to Determine Total Required Lumens for Your Space
July 2, 2024 - The reference point: A standard 100-watt incandescent light bulb produces about 1,500-1,700 lumens. Strictly speaking, 600 LED lumens provides the same amount of light as 600 incandescent lumens.
LED Lighting Supply
ledlightingsupply.com › led lighting supply › blog › how to calculate lumens per watt
How to Calculate Lumens Per Watt | LED Lighting Supply
1 week ago - After 17 years of designing commercial lighting systems, I’ve seen countless facilities make this exact upgrade. Our High Bay LED Fixtures deliver 130 to 200 lumens per watt-a crucial efficiency range that determines your long-term energy savings.
Comlight
comlight.com › post › converting-from-traditional-to-led-lighting
Converting from Traditional to LED Lighting | Blog | Commercial Lighting
March 31, 2022 - Because LED lighting produces more light at lower wattage levels, using lumens is a more accurate way to measure how bright your light bulb will be. Because lumens measure brightness and watts measure energy output, there isn’t a simple formula for converting wattage to lumens.