Quick Answer: How Do You Calculate Lumens Per Foot Candle?

How many lumens is 10 foot candles?

Determine the Needed Lumens For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens.

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

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How bright is 800 lumens?

If you want something dimmer, go for less lumens; if you prefer brighter light, look for more lumens. Replace a 75W bulb with an LED bulb that gives you about 1100 lumens. Replace a 60W bulb with an LED bulb that gives you about 800 lumens. Replace a 40W bulb with an LED bulb that gives you about 450 lumens.

How bright is 4500 lumens?

Dark Sky-Friendly Lights Choose lamps that have a total visible light output of 4500 lumens or less. This is equivalent to about four 60-watt (or one 250 watt) incandescent bulbs. That’s a lot of light at night.

How many lumens do I need calculator?

To estimate the number of lumens your space will need, just multiply the square footage of your room by the number of foot-candles required for the space. For example, for a bathroom that is 64 square feet with a foot-candles range of 70-80, you’ll need from 70×64 to 80×64 lumens, or 4480 – 5120 lumens.

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 does 10 lumens mean?

A lumen measures the amount of light that comes from a bulb. … A standard 40-watt (40W) bulb is equal to 400+ lumens.

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 lumens is considered bright?

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

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.

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.

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 many lumens do you need per square foot in a shop?

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.

How many lumens should a bedroom have?

Bedroom: 1,000 to 2,000 lumens. Hallway: 500 to 1,000 lumens.

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 do you calculate lumens per meter?

Calculate the amount of lumens you need. Multiply the area in square meters by the lux, or the area in square feet by the footcandles. work out how many bulbs you need. Divide the number of lumens by the number of lumens delivered by each bulb.

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 foot candle mean?

A foot-candle (or foot-candle, fc, lm/ft2, or ft-c) is a measurement of light intensity. One foot-candle is defined as enough light to saturate a one-foot square with one lumen of light.

How many lumens is a 100 watt bulb?

1600 lumensTo replace a 100 watt (W) incandescent bulb, look for a bulb that gives you about 1600 lumens. If you want something dimmer, go for less lumens; if you prefer brighter light, look for more lumens.