Candle Power Calculator

✖Luminous flux is a measure of the total amount of light emitted by a light source in all directions. It quantifies the overall brightness or output of the source.ⓘ Luminous Flux [F]			+10% -10%
✖Solid angle is a measure of the extent of a cone-shaped region in three-dimensional space, originating from a point and defined by its vertex angle. It quantifies the spatial coverage.ⓘ Solid Angle [ω]			+10% -10%

✖Candle power is an older term used to describe the intensity of light emitted by a source, but it has largely been superseded by the SI unit candela for modern illumination measurements.ⓘ Candle Power [CP]

⎘ Copy

👎

Formula

✖

Candle Power

Formula

`"CP" = "F"/"ω"`

Example

`"1.555556cd"="42lm"/"27sr"`

Calculator

LaTeX

Reset

👍

Download Illumination Parameters Formulas PDF PDF Image

Candle Power Solution

STEP 0: Pre-Calculation Summary

Formula Used

Candle Power = Luminous Flux/Solid Angle
CP = F/ω
This formula uses 3 Variables

Variables Used

Candle Power - (Measured in Candela) - Candle power is an older term used to describe the intensity of light emitted by a source, but it has largely been superseded by the SI unit candela for modern illumination measurements.
Luminous Flux - (Measured in Lumen) - Luminous flux is a measure of the total amount of light emitted by a light source in all directions. It quantifies the overall brightness or output of the source.
Solid Angle - (Measured in Steradian) - Solid angle is a measure of the extent of a cone-shaped region in three-dimensional space, originating from a point and defined by its vertex angle. It quantifies the spatial coverage.

STEP 1: Convert Input(s) to Base Unit

Luminous Flux: 42 Lumen --> 42 Lumen No Conversion Required
Solid Angle: 27 Steradian --> 27 Steradian No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

CP = F/ω --> 42/27

Evaluating ... ...

CP = 1.55555555555556

STEP 3: Convert Result to Output's Unit

1.55555555555556 Candela --> No Conversion Required

FINAL ANSWER

1.55555555555556 ≈ 1.555556 Candela <-- Candle Power

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Electrical » Utilization of Electrical Energy » Illumination » Illumination Parameters » Candle Power

Credits

Created by Prahalad Singh

Jaipur Engineering College and Research Centre (JECRC), Jaipur

Prahalad Singh has created this Calculator and 100+ more calculators!

Verified by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has verified this Calculator and 1900+ more calculators!

< 15 Illumination Parameters Calculators

Number of Lamps Required for Illumination

Go Number of Lamp = (Illumination Intensity*Area of Illumination)/(Luminous Flux*Utilization Factor*Maintenance Factor)

Index of Refraction

Go Refractive Index of Medium 1 = (Refractive Index of Medium 2*sin(Refracted Angle))/sin(Incident Angle)

Luminance

Go Luminance = Luminous Intensity/(Area of Illumination*cos(Illumination Angle))

Luminous Flux

Go Luminous Flux = (Area of Illumination*Luminous Intensity)/(Length of Illumination^2)

Reduction Factor

Go Reduction Factor = Mean Spherical Candle Power/Mean Horizontal Candle Power

Mean Horizontal Candle Power

Go Mean Horizontal Candle Power = Sum of Candle Power/Number of Lamp

Solid Angle

Go Solid Angle = Area of Illumination/(Radius of Illumination^2)

Maintenance Factor

Go Maintenance Factor = Final Illumination/Initial Illumination

Illumination

Go Illumination Intensity = Luminous Flux/Area of Illumination

Mean Hemi-Spherical Candle Power

Go Mean Hemi Spherical Candle Power = Luminous Flux/(2*pi)

Mean Spherical Candle Power

Go Mean Spherical Candle Power = Luminous Flux/(4*pi)

Lamp Efficiency

Go Lamp Efficiency = Luminous Flux/Input Power

Candle Power

Go Candle Power = Luminous Flux/Solid Angle

Lumens

Go Lumen = Candle Power*Solid Angle

Depreciation Factor

Go Depreciation Factor = 1/Maintenance Factor

Candle Power Formula

Candle Power = Luminous Flux/Solid Angle
CP = F/ω

What is the realtion between candle power and lumens?

Candlepower, also known as candelas (cd), is a measure of luminous intensity. It quantifies the amount of light emitted by a light source in a specific direction. On the other hand, lumens (lm) measure the total amount of light emitted by a light source in all directions, regardless of the directionality.

To relate candlepower to lumens, you need to consider the beam angle or the angular distribution of the light emitted by the source. The total luminous flux in lumens can be calculated by multiplying the luminous intensity in candelas by the solid angle in steradians (sr) that the light is emitted within.

How to Calculate Candle Power?

Candle Power calculator uses Candle Power = Luminous Flux/Solid Angle to calculate the Candle Power, The Candle Power formula refers to a unit of measurement used to quantify the intensity of light emitted by a light source in a specific direction. Candlepower is an older term that has been largely replaced by the more standardized unit of measurement known as the candela (cd). The candela is defined as the luminous intensity in a given direction of a light source that emits monochromatic radiation at a frequency of 540 terahertz (THz) and has a radiant intensity of 1/683 watt per steradian. Candle Power is denoted by CP symbol.

How to calculate Candle Power using this online calculator? To use this online calculator for Candle Power, enter Luminous Flux (F) & Solid Angle (ω) and hit the calculate button. Here is how the Candle Power calculation can be explained with given input values -> 1.555556 = 42/27.

FAQ

What is Candle Power?

The Candle Power formula refers to a unit of measurement used to quantify the intensity of light emitted by a light source in a specific direction. Candlepower is an older term that has been largely replaced by the more standardized unit of measurement known as the candela (cd). The candela is defined as the luminous intensity in a given direction of a light source that emits monochromatic radiation at a frequency of 540 terahertz (THz) and has a radiant intensity of 1/683 watt per steradian and is represented as CP = F/ω or Candle Power = Luminous Flux/Solid Angle. Luminous flux is a measure of the total amount of light emitted by a light source in all directions. It quantifies the overall brightness or output of the source & Solid angle is a measure of the extent of a cone-shaped region in three-dimensional space, originating from a point and defined by its vertex angle. It quantifies the spatial coverage.

How to calculate Candle Power?

The Candle Power formula refers to a unit of measurement used to quantify the intensity of light emitted by a light source in a specific direction. Candlepower is an older term that has been largely replaced by the more standardized unit of measurement known as the candela (cd). The candela is defined as the luminous intensity in a given direction of a light source that emits monochromatic radiation at a frequency of 540 terahertz (THz) and has a radiant intensity of 1/683 watt per steradian is calculated using Candle Power = Luminous Flux/Solid Angle. To calculate Candle Power, you need Luminous Flux (F) & Solid Angle (ω). With our tool, you need to enter the respective value for Luminous Flux & Solid Angle and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search