Step 4: Doing your own Calculations You can also calculate the number of watts directly from the foot-candles by combining both equations and using the following: Watts = Foot Candles x 0.01609696 This is because 10.76 x 0.001496 = 0.01609696).

One foot-candle is the intensity of a 1-candlepower light source at a distance of one foot. A foot-candle is calculated by taking into account the power of the light source, also known as luminance, and the distance to the illuminated point.

Their efficiency is in the range of 4 lumens per watt. This means that a 100 watt bulb will generate 400 lumens – TOTAL. (Here’s the big leap) Now, if we COULD reflect all of that 400 lumens onto 1 square foot we would get a light intensity of 400 foot candles.

Calculation Cheat Sheet:

1. To calculate Lumens (Lux) from foot-candles: Lumens = Foot Candles x 10.76.
2. To calculate Watts from foot-candles: Watts = Lumens x 0.001496.
3. You can also calculate the number of watts directly from foot-candles by combining both equations & using the following: Watts = Foot Candles x 0.01609696.

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Conversions Table
10 Lumens Per Square Foot to Footcandles = 10	800 Lumens Per Square Foot to Footcandles = 800
20 Lumens Per Square Foot to Footcandles = 20	900 Lumens Per Square Foot to Footcandles = 900

See PDF and complete foot candle index. For the average space of 250 square feet, you’ll need roughly 5,000 lumens as your primary light source (20 lumens x 250 square feet).

10.76 lumens

In other words, 3,000 lumens is meant to give a room a brighter light. This is not ideal if you have a small room and it’s a bedroom. You don’t want to blind your eyes when you’re about to go to bed. On the other hand, 2,000 lumens is ideal if you wish to light up a 200 square-foot living room.

One may also ask, how many lumens is a 30×40 shop? 30X40=1200sqft X 100 Lu = 120000 /2600 = 46 T8 32W tubes or 12 4 tube fixtures. 2600 lumens per 32W T8 tube is about average.

A general rule of thumb is to use 130 to 150 lumens per square foot of work space. For example, a 40-watt fluorescent bulb puts out about 2,200 lumens. A 60-watt incandescent bulb puts out about 800 lumens.

An 800 lumens light bulb is not bright enough as you will have a fairly dim-lit room. An 800 lumens light has the same brightness as a single 60 watts incandescent light bulb. Such light is better for a walk-in closet but is insufficient to serve as the only light source for a habitable room.

Well, if you have a fluorescent shop light that uses 2 lamps that are 30 Watts each, you can estimate that you will want roughly 3000 lumens from your shop light to maintain the same level of brightness. Color temperature is a number that describes how “yellow” or “blue” a light’s color is.

The general rule of thumb for providing light for an area is a minimum of 30 watts per square foot. 50 watts per square foot is optimal.

The Winners: Best LED Shop Lights

• Hykolity 4 FT 5200LM LED Shop Light.
• Hyperikon 4FT 4580LM LED Shop Light.
• Hykolity 4FT 4200LM LED Shop Light.
• Hyperikon 4 FT 4000LM LED Linkable Shop Lights.
• FrenchMay 4FT 4800LM Linkable LED Utility Shop Light.
• Barrina 4FT 2200LM LED Shop Light and Under Cabinet Light (Pack of 8)

Warm white (3,000 to 4,000 Kelvin) is more yellowish-white. These bulbs are best suited for kitchens and bathrooms. Bright white (4,000 to 5,000 Kelvin) is between white and blue tones.

LED lighting also produces a higher quality of light that reduces heat and reveals color better, which is important for task lighting in the kitchen. And, LED kitchen lighting lasts longer and is more durable than traditional lighting, meaning you won’t have to worry about frequent maintenance to change bulbs.

While cool white look great in modern kitchens and where the brighter the better, warm white works much better where you are looking for softer light. It’s particularly well suited to lounges, living rooms and traditional kitchen, like country styles, where the white light contrasts too much with the rest of the room.

So if you have an 18′ long room x 12′ wide room multiply times 1.5 = 324 watts, that’s how much wattage is needed to adequately light the room. You can divide that lighting into more than one source. 2 Lamps @ 150 watts each and 1 lamp @ 60 watt would be more than adequate light for the room.

450 lumens (40 watts) – This level is enough for some everyday purposes like writing and reading. 800 to 1100 lumens (60 to 75 watts) – It is the recommended level for delicate tasks like heavy-duty drafting or working with small pieces.

LED light bulbs for general use around the home will typically have a wattage between 5W-15W, and will emit between 300-500 lumens. Some outdoor floodlights emit in excess of 20,000lm.

800 lumens

As a general benchmark, an 800 lumen LED bulb produces the same amount of light as a traditional incandescent 60-Watt light bulb. That means you could use a 150W LED equivalent bulb in a 60W socket and get more than three times the brightness of your old 60-Watt incandescent bulb.

1 watt LED bulb is 90 Lumens. 1 watt LED bulb is the same as 9 watts in an incandescent light bulb.

Yes, assuming you’re suggesting an LED that has lumen output similar to a 60 watt lamp. You can use any lamp that consumes up to 40 watts and is shaped similar to the lamp recommended. So for example, if it was a standard A lamp, you could use any LED lamp that consumes up to 40 watts with no safety issue.

Higher wattage alone doesn’t make the bulb burn out faster, but the rating partially has to do with heat/fire. For example, the fixture may only be designed to handle the heat of a 40W. Put in a 60W and the heat increases, there’s not enough ventilation, and the bulb prematurely fails due to the higher heat.

Putting a 100-watt bulb in a 60-watt fixture could cause intense heat, melting the light socket and the insulation on the fixture’s wires. Any time you have that kind of damage on wires, you’re at a big risk for arc faults, where an electrical current falls off its intended path— a leading cause of home fires.

customers ask is: “Can I use an LED that has a higher wattage equivalent than my fixture allows?” The simple answer is yes, as long as the LED bulb uses less wattage than your fixture.

A 100 Watts bulb draws 0.90 Amps.

Compare wattage

Traditional bulb1	Halogen2	LED
40 watts	25 watts	5 watts
60 watts	40 watts	7 watts
75 watts	45 watts	9 watts
100 watts	60 watts	12 watts

You can safely use such a bulb in your fixture. Good luck! As Todd Lipcon wrote, nothing is likely to happen when you use a 150 watt bulb instead of a 100 watt bulb. The wires and sockets are designed to take much more current load than that, before melting.