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Luminous intensity converter
How much light a source throws in one direction. 5 units, converted from one table of exact factors.
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1 candela in every other luminous intensity unit
Computed by the same engine that runs the converter above, so these can never drift apart from it.
| From | Equals | Unit |
|---|---|---|
| 1 candela | 1,000 | millicandela (mcd) |
| 1 candela | 0.001 | kilocandela (kcd) |
| 1 candela | 1.019367992 | candlepower (cp) |
| 1 candela | 1.107419712 | hefnerkerze (HK) |
What each unit actually is
Most converters give you a number and stop. Where a figure is exact by definition we say so, and where it is an average or shifts with conditions we say that too — that is usually the thing you needed to know.
| Unit | Symbol | What it actually is |
|---|---|---|
| candela | cd | SI base unit. Roughly one household candle. |
| millicandela | mcd | Indicator LEDs are rated in these. |
| kilocandela | kcd | |
| candlepower | cp | The old measure. Close to a candela but not identical. |
| hefnerkerze | HK | A German standard from the 1890s. |
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