Luminous Intensity Converter
Convert luminous intensity between candela (the SI unit), candle-power, hefnerkerze and other historic units of light brightness.
Written by Rahman · Last reviewed
Quick answer
Luminous intensity is light emitted in a particular direction, measured in candelas, one of the seven SI base units. The older candlepower is 0.981 candela and the Hefner candle 0.903. One candela is roughly the light of a single ordinary candle, which is where the name came from.
| Candela (cd) | 1 |
| Candlepower (cp) | 1.019367992 |
| Hefnerkerze (HK) | 1.107419712 |
About the Luminous Intensity Converter
Luminous intensity measures the amount of visible light a source emits in a particular direction. The SI unit is the candela.
It is used to rate lamps, LEDs and other light sources.
Frequently Asked Questions
What is luminous intensity?
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It is the power of visible light emitted by a source in a given direction, measured in candela.
What is a candela?
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The candela is the SI base unit of luminous intensity, roughly the light of a single candle.
How is it different from luminous flux?
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Luminous intensity is light in one direction; luminous flux (measured in lumens) is the total light emitted in all directions.