# How do you convert lux to lumens?

## How do you convert lux to lumens?

The fundamental ratio of conversion from desired lux level to required lumens is: 1 lux = 1 lumen per square meter. This is equivalent to: 1 lux = 0.0929 lumens per square foot.

## How many lux is 400 lumens?

Well imagine you buy a 400 lumen bulb and put it in a room with 10m2 of surface area inside. A little toilet or store room for example. Putting that into our equation, the room is therefore on average getting a light intensity of 40 lux.

How bright is 200 lumens?

Energy Star Bulbs

Watts (energy usage) Lumens (light output)
25 200
35 325
40 450
60 800

What is lux level standard?

The standard unit for measuring the light level intensity is termed as LUX level. It is also known as illumination or illuminance. It calculates the intensity of light the falls on the surface like – floors or walls in the lighting design.

### How do you calculate lux for outdoor lighting?

1. Street illumination level in Lux (E)=(Al x (cu x mf)) / (w x d)
2. E = The illumination in Lux.
3. w = Width of the roadway.
4. d = Distance between luminaries.
5. cu = Coefficient of utilization.
6. Al = Average lumens, Al = (E x w x d) / Cu x mf.
7. The typical value of Al is.
8. 20500 lumens for 400 watts.

### How do you calculate lux for a room?

Although 1 lumen will theoretically produce 1 LUX of light over an area of 1 square metre this is only in the perfect world as there are other factors to consider….How to calculate the LUX level in a Room.

Application Recommended Lux Age 25-65 Recommended Lux Age 65+
General assembly 1,000 2,000
Detailed assembly 2,000 4,000
Fine inspection 5,000 10,000

How many lux is a 60 watt bulb?

How many Lux is a 60 watt bulb?

Old Incandescent Bulbs (Watts) ENERGY STAR Bulb Brightness (Minimum Lumens)
40 450
60 800
75 1,100
100 1,600

Is 200 lumens bright enough for reading?

For example, for a reading light you’ll probably want at least 450 lumens. Similarly, you’ll need brighter lights over kitchen worktops and in bathrooms, whereas in hallways fewer lumens will be fine.

## Is 200 lumen good?

Recommended Lumens for Specific Outdoor Needs Hardscape lights (on walls): 50-185 lumens. Landscape lights: 50-300 lumens. Path lights: 100-200 lumens.

## How to convert lumens to Lux in a calculator?

Lux to lumens calculator ►. The illuminance E v in lux (lx) is equal to 10.76391 times the luminous flux Φ V in lumens (lm) divided by the surface area A in square feet (ft 2): E v(lx) = 10.76391 × Φ V(lm) / A (ft2 )

What is the ratio of watts to Lux?

The power P in watts (W) is equal to the 0.09290304 times the illuminance Ev in lux (lx) times the surface area A in square feet (ft2), divided by the luminous efficacy η in lumens per watt (lm/W):

How is the luminous flux E V ( LX ) calculated?

E v(lx) = Φ V(lm) / A (m2 ) The illuminance E v in lux (lx) is equal to the luminous flux Φ V in lumens (lm) divided by 4 times pi times the squared sphere radius r in meters (m): E v(lx) = Φ V(lm) / (4⋅π⋅r 2 (m2 )) Lumens to lux calculation ►.

### What is the formula for lumens to Watts?

Lumens to watts calculation formula. Energy saving lamps have high luminous efficacy (more lumens per watt). The power P in watts (W) is equal to the luminous flux ΦV in lumens (lm), divided by the luminous efficacy η in lumens per watt (lm/W): P(W) = ΦV(lm) / η(lm/W)