Quick Answer: What Is The Difference Between Foot Candles And Lumens?

How many lumens is 30 foot candles?

Determine the Needed Lumens A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens..

What does 5 foot candles mean?

Believe it or not, foot candles are the most common unit of measure used by lighting professionals to calculate light levels in businesses and outdoor spaces. In a nutshell, a foot candle is a measurement of light intensity and is defined as the illuminance on a one-square foot surface from a uniform source of light.

Is 100 lumens a lot?

One lumen can also be likened to the light output of a single candle. Therefore, 100-lumen can be used in urban and suburban areas to scan a small backyard, blind attackers, etc. This is good brightness for medium-sized 2x AA flashlight. … One lumen of light is barely enough to light a trail in the middle of the night.

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.

What’s the difference between lux and foot candles?

There is no difference between foot candles and lux in respect of what they measure. … The footcandle is an ‘imperial measurement’, while lux is a metric (or SI) measurement.

Is 3000 lumens too bright?

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.

How many foot candles are in a 100 watt bulb?

400 foot candlesTheir 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.

How bright is a Lux?

One lux is equal to one lumen per square metre: 1 lx = 1 lm/m2 = 1 cd·sr/m2. A flux of 1000 lumens, spread uniformly over an area of 1 square metre, lights up that square metre with an illuminance of 1000 lux. However, the same 1000 lumens spread out over 10 square metres produces a dimmer illuminance of only 100 lux.

How strong is 100 lumens?

100 lumens is considered bright enough for most walkways — including commercial properties. 100 lumens is equivalent to about 20 watts.

How strong is 5000 lumens?

For the average living room of 250 square feet, you’ll need 5,000 lumens as your primary light source (20 lumens x 250 square feet), equivalent to about five 100 watt incandescent light bulbs, five 23 watt CFLs, or eight 10 watt LED light bulbs.

How many lights do I need in a room?

As a handy rule of thumb, a sitting room or bedroom will generally require around 10-20 lumens per square foot, while a bathroom or kitchen will need a stronger level of lighting, at around 70-80 lumens per square foot. To work out the lumens you need, simply multiply the square footage of the room by this figure.

How many watts is a foot candle?

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).

How many foot candles is bright indirect light?

1000-2000 foot candles1000-2000 foot candles of light are considered bright indirect light.

How many lumens equal a foot candle?

A foot-candle equals one lumen per square foot. This is a British measurement. Using the metric system, a lumen is measured by a square meter or a lux. Thus a foot-candle is equivalent to approximately 10 lux or 10.57 lux.

How bright is a foot candle?

One foot-candle is defined as enough light to saturate a one-foot square with one lumen of light.

How many lumens do I need in a bathroom?

The only light will be above the mirror over the vanity. A useful rule of thumb for bath vanities is to use a minimum of two 60-watt incandescent bulbs, which typically produce approximately 800 lumens each for a total of 1,600 lumens.

What does 1 lux look like?

One lux (1 lux) is defined as being equivalent to one lumen spread over an area of one square metre. To put it another way: … So 1,000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance level of 1000 lux.

Which is better lux or lumens?

Lux: The amount of light that is cast on a surface is called illuminance, which is measured in lux. This can be thought of as light intensity within a specific area. … Typically, the more lumens a light fixture provides, the brighter it is. One lux is equal to one lumen per square meter (lux = lumens/m2).