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You cant convert directly between Watts and Lumens. They are measuring completely different things.
Lumens measure the flux of a light being produced by a light source or received by a surface, while Watts measure the amount of power used.
You could have a higher power device, but with less light then a low power one. It just depends on the light.
Unless the flashlight manufacturer already has the Lumens and Watts listed, you won't be able to find out.
Answer
The watt is the radiometric unit for power, whereas the lumen is the photometric unit for power. In the case of a lamp, the watt is the product of the supply voltage and load current drawn by the lamp and describes the power input to the lamp. The lamp's power output is termed 'luminous flux' and the amount of luminous flux produced by a lamp depends upon it efficacy (NOT 'efficiency'), which is the ratio of input power expressed in watts to the luminous flux (i.e. output power) expressed in lumens -i.e. watts per lumen.
The efficacy of a lamp depends upon the type of lamp -i.e. its principle of operation. Generally, incandescent lamps have relatively low values of efficacy, whereas fluorescent or other 'energy efficient' (e.g. LED) lamps have relatively high values of efficacy.
To answer your question, it is necessary to know the typeof lamp to which you refer. In the absence of that information, I suggest that you search for 'efficacy of lamps' on the internet, in order to determine the efficacy of your particular lamp. Once you know that, you simply then multiply that efficacy by the number of watts (7.8) in order to determine the number of corresponding lumens.
What else can I help you with?
How many lumen's are in a 36 watt T8 fluorescent tube?
2300lm Comment I think you mean lumens, not lumen's. No that answer is wrong Watts (energy usage) / Lumens (light output) 25 is equal to 200 35 is equal to 325 40 is equal to 450 60 is equal to 800 75 is equal to 1100 100 is equal to 1600 125 is equal to 2000 150 is equal to 2600 36 watts would be about 350 Lumens
How many watts equal 35 lumen's?
There is no direct conversion for this, because these are two separate things. Watts is actual power usage. "Lumens" is how much light is provided from a specified amount of power. The typical light bulb converts some of the electricity driven through it into light, and the rest into heat. The more efficient the light bulb, the less power per lumen will be required.That is why newer bulbs can be purchased that are 13 watts and advertised as equivalent to 60 watt incandescent bulbs - the light output is roughly equivalent (lumens), but the power usage is substantially different.
How many Lumen's can a 60 watt bulb produce?
This depends on the type of bulb and it's efficiency. Incandescent bulbs produce 700-900 lumens at 60 watts.
How to convert .78 KW INTO HP?
The conversion factor is 1.34. So: .78 kW x 1.34 = 1.0452 hp
How do you convert 277 volts to kW?
You don't. Volts and Watts are two different units. That's like asking me to convert distance and speed. Multiply your 277 volts by an amperage value and that will equal watts. Any product over 999 watts will be in kWs. 1000 watts = 1 kW, just move the decimal place 3 places to the left for kilowatts
How bright is 950 lumens?
220 lumens is equal to a tungsten incandescent light bulb of 15 watts. Halogen lamp 20 watts. Fluorescent lamp 60 watts. LED lamp 60 watts. high pressure sodium vapour lamp 117 watts. Mercury vapour lamp 50 watts or 17.32 candle power
How can I convert lux to watts in order to determine the power of light emitted by a source?
To convert lux to watts, you need to know the luminous efficacy of the light source in lumens per watt. Then, you can use the formula: Power (watts) Illuminance (lux) x Area (square meters) x Luminous Efficacy (lumens per watt). This calculation will help you determine the power of light emitted by a source.
How many watts is 2800 lumens?
There is no direct conversion between lumens and watts as they measure different things. Lumens measure the total amount of visible light emitted by a source, while watts measure the amount of energy consumed or produced. The equivalence between lumens and watts depends on the type of light source (i.e., incandescent, LED, etc.) and their efficiency.
What is the conversion factor from 150 watts to lumens?
The conversion factor from 150 watts to lumens depends on the type of light bulb being used. For incandescent bulbs, a rough estimate is about 14 lumens per watt. Therefore, for a 150-watt incandescent bulb, the approximate conversion would be 150 watts x 14 lumens/watt 2100 lumens.
How may watts is 400 lumens?
Bulb brightness in LumensA 100 watt Bulb is rated at approximately 1700 lumensA 60 watt incandescent bulb is rated at approximately 800 lumensA 40 watt bulb is rated at approximately 400 lumensA 25 watt bulb is rated at approximately 180 lumensA 4 watt night light bulb is rated at approximately 20 lumens
How many horsepower is 78 watts?
78 watts is 0.1046hp
Is a 35 lumens bulb as bright as a 60 watts bulb?
Well friend, lumens and watts measure different things. Lumens tell us how bright a bulb is, while watts tell us how much energy it uses. A 35 lumens bulb may not be as bright as a 60 watts bulb, but it can still light up a room beautifully in its own gentle way. Just remember, every light has its own special glow that can bring warmth and comfort to any space.
How many lumens does a light bulb with a power consumption of 150 watts produce?
A light bulb with a power consumption of 150 watts typically produces around 2600 to 3000 lumens.
How many watts of led equals 40 watts of fluorescent?
Watts are a unit of power. So 40 watts of power to an LED are the same as 40 watts of power to a fluorescent. Sometimes LEDs are rated in equivalent watts which is an attempt to relate watts to brightness or lumens. You need to compare lumens and the "temperature" of the bulbs in Kelvin to get the comparison I think you are looking for.
What is the conversion rate from 150 watts to lumens?
The conversion rate from 150 watts to lumens depends on the type of light source being used. For incandescent bulbs, a rough estimate is around 1500 lumens. LED bulbs may vary, but generally, 150 watts would be equivalent to around 3000-4000 lumens. It is recommended to check the specific specifications of the light source for an accurate conversion.
How many lumens in an LED to make 60 watts?
There is no direct conversion between lumens and watts for LEDs since they are measured differently. However, as a rough estimate, a 60-watt incandescent bulb produces about 800 lumens. For an equivalent LED output, you would typically need an LED bulb with around 800 lumens.
How many watts in 820 lumens?
The number of watts needed to produce 820 lumens depends on the type of light source. For traditional incandescent bulbs, it would be around 60-70 watts. However, for LED or CFL bulbs, it would be much lower, around 10-15 watts.
