Light Converters
Luminous Intensity Converter
Convert luminous intensity between candelas and historical candle units. The candela is the SI base unit, defined by the luminous efficacy of 540 THz radiation.
LUMINOUS INTENSITY CONVERTER — INSTANT RESULT
All supported units — luminous intensity
| Unit | Symbol | To candela (cd) | From candela (cd) |
|---|---|---|---|
| Candela | cd | 1 cd = 1 cd | 1 cd = 1 cd |
| Candle (international) | c (int.) | 1 c (int.) = 0.981 cd | 1 cd = 1.01936799 c (int.) |
| Hefner Candle | HK | 1 HK = 0.903 cd | 1 cd = 1.10741971 HK |
| Carcel | carcel | 1 carcel = 9.61 cd | 1 cd = 0.10405827 carcel |
| Bougie Décimale | bd | 1 bd = 1 cd | 1 cd = 1 bd |
| Lumen/steradian | lm/sr | 1 lm/sr = 1 cd | 1 cd = 1 lm/sr |
Popular luminous intensity conversions
Frequently asked questions
What units does this luminous intensity converter support?
It supports 6 units: Candela (cd), Candle (international) (c (int.)), Hefner Candle (HK), Carcel (carcel), Bougie Décimale (bd), Lumen/steradian (lm/sr).
What is the base unit of luminous intensity?
The SI reference unit is the candela (cd). Every conversion is computed by converting the input to the base unit, then from the base unit to the target unit, so chained precision is preserved.
Is this converter accurate?
Yes. Conversion factors use exact legal definitions where they exist (for example 1 in = 25.4 mm exactly) and CODATA/ISO constants otherwise. Results are shown to up to 10 significant figures.