# Footcandles to lux conversion calculator

## Footcandles to lux conversion calculator

We are offering Illuminance  in footcandles (fc) to lux (lx) conversion calculator to help you in the conversion process. all you need to do is to enter the illuminance in footcandles (fc) and press the = button to get the illuminance in lux (lx):

 Enter illuminance in footcandles: fc Illuminance result in lux: lx

## Lux to footcandles conversion formula

The illuminance Ev measured in lux (lx) is apparently equal to the vlaue of  illuminance Ev in footcandles (fc), and totally divided by 0.09290304.

Ev(lx) = Ev(fc) / 0.09290304 = Ev(fc) × 10.76391

# Watts to lux calculator

## Watts to lux calculator

We are offering Electric power in watts (W) to illuminance in lux (lx) calculator to aid you in making calculations. Enter the value of power in watts, surface area measured in square feet / meters or the spherical radius in feet / meters and the value of luminous efficacy in lumens per watt, then hit the = button to get the illuminance in lux.

 Enter power in watts: W Select light source -- select light source -- Tungsten incandescent light bulb Halogen lamp Fluorescent lamp LED lamp Metal halide lamp High pressure sodium vapor lamp Low pressure sodium vapor lamp Mercury vapor lamp Or enter luminous efficacy in lumens per watt: lm/W Enter surface area: ft² m² Or enter spherical radius: ft m Illuminance result in lux: lx

* the predefined luminous efficacy values can be called as the typical / average values.

## Watts to lux calculation formula

#### Watts to lux calculation with area in square feet

The value of the illuminance Ev in lux (lx) is apparently equal to 10.76391 times the value of power P in watts (W), multiplied by the luminous efficacy η measured in lumens per watt (lm/W) which is divided by the surface area A measured in square feet (ft2).

Ev(lx) = 10.76391 × P(W) × η(lm/W) / A(ft2)

#### Watts to lux calculation with area in square meters

The value of illuminance Ev measured in lux (lx) is apparently equal to the power P measured in watts (W), multiplied by the luminous efficacy η measured in lumens per watt (lm/W) divided by the surface area A in square meters (m2).

Ev(lx) = P(W) × η(lm/W) / A(m2)

# Watts to lumens calculator

## Watts to lumens calculator

We are offering the Electric power in watts (W) to luminous flux in lumens (lm) calculator to let you have easy calculations. Enter the value of power in watts, and the value of luminous efficacy in lumens per watt and finally hit the Calculate button to find results for luminous flux in lumens.

 Enter power in watts: W Enter light source: -- select light source -- Tungsten incandescent light bulb Halogen lamp Fluorescent lamp LED lamp Metal halide lamp High pressure sodium vapor lamp Low pressure sodium vapor lamp Mercury vapor lamp Or enter luminous efficacy in lumens per watt: lm/W Luminous flux result in lumens: lm

* the predefined values of luminous efficacy are actually typical / average values.

## Watts to lumens calculation

We all know that energy saving lamps have high luminous efficacy which is more lumens per watt. The luminous flux ΦV measured in lumens (lm) is apparently equal to the power P in watts (W), multiplied by the luminous efficacy η measured in lumens per watt (lm/W).

ΦV(lm) = P(W) × η(lm/W)

# Millicandela to lumens calculator

## Millicandela to lumens calculator

We are offering Online calculator to make calculation from Millicandela (mcd) to lumens (lm), check now!

### Millicandela to lumens calculator

Enter the values of luminous flux in lumens, and enter the values of apex angle in degrees and hit the equal to button to obtain luminous intensity in millicandela.

 Enter Luminous intensity result in millicandela: mcd Enter apex angle in degrees: ° luminous flux result in lumens: lm

### Millicandela to lumens calculation

The formula used to calculate the uniform, isotropic light source, the luminous flux Φv in lumens (lm) is apparently equal to the luminous intensity Iv measured in millicandela (mcd), multiplied by the solid angle Ω in steradians (sr) which is totally divided by 1000.

Φv(lm) = Iv(mcd) × Ω(sr) / 1000

The value of solid angle Ω in steradians (sr) is apparently equal to twice the value of pi times 1 minus cosine of half the apex angle θ measured in degrees (°):

Ω(sr) = 2π(1 – cos(θ/2))

The value of luminous flux Φv measured in lumens (lm) is apparently equal to the luminous intensity Iv measured in millicandela (mcd), multiplied by twice and half the apex angle θ measured in degrees (°) and finally divided by 1000.

Φv(lm) = Iv(mcd) × ( 2π(1 – cos(θ/2)) ) / 1000

So, the value can be found by,

lumens = millicandela × ( 2π(1 – cos(degrees/2)) ) / 1000

Or, the formula uses is,

lm = mcd × ( 2π(1 – cos(°/2)) ) / 1000

# Lux to watts calculator

## Lux to watts calculator

We are offering the best online calculators to find Illuminance in lux (lx) to electric power in watts (W) to calculate.

You can simply enter the value of illuminance in lux, luminous efficacy in lumens per watt, with the surface area in square feet / meters or the spherical radius in feet / meters and hit the = button to find the value of power in watts.

 Enter illuminance in lux: lx Select light source: -- select light source -- Tungsten incandescent light bulb Halogen lamp Fluorescent lamp LED lamp Metal halide lamp High pressure sodium vapor lamp Low pressure sodium vapor lamp Mercury vapor lamp Or enter luminous efficacy in lumens per watt: lm/W Enter surface area: ft² m² Or enter spherical radius: ft m Power  result in watts: W

* the predefined values of luminous efficacy are typical / average values.

## Formula for Lux to watts calculation

#### Lux to watts calculation with area in square feet

The power P measured in watts (W) is apparently equal to the 0.09290304 times the value of illuminance Ev measured in lux (lx) multiplied by the surface area A in square feet (ft2), and lastly divided by the luminous efficacy η measured in lumens per watt (lm/W).

P(W) = 0.09290304 × Ev(lx) × A(ft2) / η(lm/W)

#### Lux to watts calculation with area in square meters

The power P in watts (W) is apparently equal to the illuminance Ev in lux (lx), multiplied by the surface area A in square meters (m2), which is divided by the luminous efficacy η measured in lumens per watt (lm/W).

P(W) = Ev(lx) × A(m2) / η(lm/W)

# Lux to lumens calculator

## Lux to lumens calculator

We are offering online calculator to help you make calculations with Illuminance in lux (lx) to luminous flux in lumens (lm) to help you calculate.

You simply need to enter the illuminance in lux (lx), then select area unit type, and enter the radius in meters for spherical light source or the surface area which is measured in square meters for any light source and hit the = button to obtain the luminous flux in lumens (lm).

 Enter Illuminance in lux: lx Select area unit type: Area in square feet Area in square meters Enter spherical radius: Or enter surface area: Luminous flux result in lumens: lm

## Lux to lumens calculation formula

#### Calculation with area in square feet

The value of luminous flux ΦV in lumens (lm) is apparently equal to 0.09290304 times the value of illuminance Ev in lux (lx) multiplied by the surface area A measured in square feet (ft2).

ΦV(lm) = 0.09290304 × Ev(lx) × A(ft2)

The luminous flux ΦV measured in lumens (lm) is apparently equal to 0.09290304 times the illuminance Ev measured in lux (lx) multiplied by the 4 times the value of pi multiplied by the squared sphere with radius r in feet (ft).

ΦV(lm) = 0.09290304 × Ev(lx) × 4⋅π⋅r(ft) 2

#### Calculation with area in square meters

The luminous flux ΦV  measured in lumens (lm) is apparently equal to the illuminance Ev measured in lux (lx), multiplied by the surface area A measured in square meters (m2).

ΦV(lm) = Ev(lx) × A(m2)

The luminous flux  ΦV is apparently measured in lumens (lm) is equal to the value of illuminance Ev measured in lux (lx) times 4 times the value of pi multiplied by the squared sphere with radius r in meters (m).

ΦV(lm) = Ev(lx) × 4⋅π⋅r 2(m2)

# Lux to footcandles conversion calculator

## Lux to footcandles conversion calculator

We are offering the online calculator to find the value of Illuminance in lux (lx) to footcandles (fc) conversion calculator, make your calculations with ease now. All you need is to enter the values of illuminance in lux (lx) and hit the = button to find the values of illuminance in footcandles (fc).

 Enter illuminance in lux: lx Illuminance result in footcandles: fc

## Formula for Lux to footcandles conversion

The value of illuminance Ev measured in footcandles (fc) is apparently equal to the value of illuminance Ev in lux (lx) times 0.09290304.

Ev(fc) = Ev(lx) × 0.09290304 = Ev(lx) / 10.76391

# Lux to candela calculator

## Lux to candela calculator

We are offering online calculator to find value of Illuminance in lux (lx) to luminous intensity measured in candela (cd), check here.

## Lux to candela calculator

All you need is to enter the illuminance in lux, then distance from the light source, select the value in feet or meters and finally hit the = button to calculate the luminous intensity in candela.

 Enter illuminance in lux: lx Enter distance and select feet or meters: ft m Luminous intensity result in candela: cd

## Calculation for Lux to candela

#### Find Lux to candela calculation with distance in feet

The luminous intensity Iv measured in candela (cd) is apparently equal to 0.09290304 times the illuminance Ev measured in lux (lx), multiplied by the square distance from the light source d2 measured in square feet (ft2).

Iv(cd) = 0.09290304 × Ev(lx) × (d(ft))2

#### Lux to candela calculation with distance in meters

The value of the luminous intensity Iv measured in candela (cd) is apparently equal to the illuminance Ev measured in lux (lx), multiplied by the square distance from the value of light source d2 measured in square meters (m2).

Iv(cd) = Ev(lx) × (d(m))2

# Lumens to watts calculator

## Lumens to watts calculator

We are offering Luminous flux in lumens (lm) to the electric power in watts (W) calculator, to help you making your calculation easy, check now! You can simply enter the luminous flux in lumens, and the luminous efficacy in lumens per watt and hit the button to get the power in watts.

 Enter luminous flux in lumens: lm Enter light source: -- select light source -- Tungsten incandescent light bulb Halogen lamp Fluorescent lamp LED lamp Metal halide lamp High pressure sodium vapor lamp Low pressure sodium vapor lamp Mercury vapor lamp Or enter luminous efficacy in lumens per watt: lm/W Power result in watts: W

* the values of predefined luminous efficacy are the average values.

## Formula for Lumens to watts calculation

The formula used for energy saving lamps have the high luminous efficacy (which are more lumens per watt). The power P calculated in watts (W) is apparently equal to the luminous flux ΦV in lumens (lm), which is divided by the luminous efficacy η measured in lumens per watt (lm/W).

P(W) = ΦV(lm) / η(lm/W)

### Lumens to watts table

We are presenting here Lumens to watts table to help you in making easy calculations, check now!

 Lumens Fluorescent / LED (watts) Incandescent light bulb (watts) 375 lm 6.23 W 25 W 600 lm 10 W 40 W 900 lm 15 W 60 W 1125 lm 18.75 W 75 W 1500 lm 25 W 100 W 2250 lm 37.5 W 150 W 3000 lm 50 W 200 W

# Lumens to millicandela calculator

## Lumens to millicandela calculator

We are offering the Lumens (lm) to millicandela (mcd) calculator to help you in calculations.

## Lumens to millicandela calculator

All you need is to enter the luminous flux in lumens, apex angle in degrees and press the hit button to get the luminous intensity measured in millicandela.

 Enter luminous flux in lumens: lm Enter apex angle in degrees: ° Luminous intensity result in millicandela: mcd

## Lumens to millicandela calculation

For the uniform, the isotropic light source, the luminous intensity Iv measured in millicandela (mcd) is apparently equal to 1000 times the luminous flux Φv which is measured in lumens (lm), and th whole has to be divided by the solid angle Ω measured in steradians (sr).

Iv(mcd) = 1000 × Φv(lm) / Ω(sr)

The solid angle Ω which is measured in steradians (sr) is apparently equal to twice the value of pi multiplied by 1 minus cosine of half the apex angle θ calculated in degrees (°).

Ω(sr) = 2π(1 – cos(θ/2))

The value of the luminous intensity Iv is  apparently measured in millicandela (mcd) is apparently equal to 1000 times of the luminous flux Φv measured in lumens (lm), and divided by 2 times pi times 1 minus cosine of half the apex angle θ in degrees (°).

Iv(mcd) = 1000 × Φv(lm) / ( 2π(1 – cos(θ/2)) )

So the value can be found as,

millicandela = 1000 × lumens / ( 2π(1 – cos(degrees/2)) )

Or, it can be calculated as,

mcd = 1000 × lm / ( 2π(1 – cos(°/2)) )