Luminous Intensity Converter
Convert luminous intensity between candela (cd) and candlepower (cp). Luminous intensity measures the power of a light source in a specific direction.
Common Luminous Intensity Conversions
| From | To |
|---|---|
| 1 cp (candlepower) | ~1 cd |
| 1 kcd | 1,000 cd |
| LED flashlight | ~100 cd |
| Car headlight | ~700 cd |
| Lighthouse beam | ~millions of cd |
Luminous Intensity Unit Definitions
- Candela (cd)
- SI base unit of luminous intensity.
- Candlepower (cp)
- Historically ~1 cd. Now used interchangeably with cd.
Frequently Asked Questions
What is the difference between lumens and candela?
Candela (cd) measures intensity in one direction. Lumens (lm) measure total light output in all directions. A flashlight has high cd (narrow beam); a bulb has high lumens (all directions).