# ››Convert picocandela to gigacandela

picocandela
gigacandela

How many picocandela in 1 gigacandela? The answer is 1.0E+21.
We assume you are converting between picocandela and gigacandela.
You can view more details on each measurement unit:
picocandela or gigacandela
The SI base unit for luminous intensity is the candela.
1 candela is equal to 1.0E+12 picocandela, or 1.0E-9 gigacandela.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between picocandelas and gigacandelas.
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# ››Definition: Picocandela

The SI prefix "pico" represents a factor of 10-12, or in exponential notation, 1E-12.

So 1 picocandela = 10-12 candelas.

The definition of a candela is as follows:

The candela (symbol: cd) is the SI base unit of luminous intensity. It is the power emitted by a light source in a particular direction, weighted by the luminosity function. A common candle emits light with a luminous intensity of roughly one candela. The candela is officially defined as the luminous intensity of a source that emits monochromatic radiation of frequency 540×1012 hertz and that has a radiant intensity of 1/683 watt per steradian.

# ››Definition: Gigacandela

The SI prefix "giga" represents a factor of 109, or in exponential notation, 1E9.

So 1 gigacandela = 109 candelas.

The definition of a candela is as follows:

The candela (symbol: cd) is the SI base unit of luminous intensity. It is the power emitted by a light source in a particular direction, weighted by the luminosity function. A common candle emits light with a luminous intensity of roughly one candela. The candela is officially defined as the luminous intensity of a source that emits monochromatic radiation of frequency 540×1012 hertz and that has a radiant intensity of 1/683 watt per steradian.

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