Luminous Intensity Converter

✨ Convert between luminous intensity units with precision and ease. Your ultimate companion for lighting design and photometry! ⚡

📏 From
🎯 To
Enter a value to see the result
Common Conversions
Quick access to frequently used conversions
Unit Information

SI Units

International System of Units (SI) measurements

cd
si
Candela
SI base unit for luminous intensity
lm/sr
si
Lumen per Steradian
Alternative expression: 1 cd = 1 lm/sr

CGS Units

Centimeter-gram-second system units

HK
cgs
Hefner Candle
Historical unit: 1 HK = 0.903 cd
carcel
cgs
Carcel
Historical unit: 1 carcel = 9.74 cd
violle
cgs
Violle
Historical unit: 1 violle = 20.17 cd

decimal

Unit measurements

mcd
decimal
Millicandela
1/1000 of a candela = 0.001 cd
μcd
decimal
Microcandela
1/1,000,000 of a candela = 0.000001 cd
ncd
decimal
Nanocandela
1/1,000,000,000 of a candela = 0.000000001 cd
kcd
decimal
Kilocandela
1000 candelas = 1000 cd
Mcd
decimal
Megacandela
1,000,000 candelas = 1,000,000 cd

Specialized Units

Domain-specific measurements

cd/W
specialized
Candela per Watt
Luminous efficacy unit (depends on wavelength)
cd/m²
specialized
Candela per Square Meter
Luminance unit (not luminous intensity, but related)
Preferences

Luminous Intensity Converter

Our Luminous Intensity Converter provides accurate conversions between different luminous intensity units used in lighting design and photometry. Whether you're working with SI units like candela, CGS units like hefner candle and carcel, or specialized units like millicandela, this tool delivers precise results instantly.

Supported Unit Categories:

  • SI Units: Candela (cd), Lumen per Steradian (lm/sr)
  • CGS Units: Hefner Candle (HK), Carcel, Violle
  • Decimal Multiples: Millicandela (mcd), Microcandela (μcd), Kilocandela (kcd)
  • Specialized Units: Candela per Watt (cd/W), Candela per Square Meter (cd/m²)

Common Conversions:

  • 1 candela = 1 lumen/steradian = 1,000 millicandela
  • 1 hefner candle = 0.903 candela
  • 1 carcel = 9.74 candela
  • 1 kilocandela = 1,000 candela

How to Use:

  1. Enter the value you want to convert in the input field
  2. Select the source unit from the "From" dropdown
  3. Select the target unit from the "To" dropdown
  4. View the converted result instantly
  5. Use the swap button to quickly reverse the conversion

Applications:

This luminous intensity converter is essential for lighting designers, electrical engineers, photographers, and anyone working with light source measurements. It's particularly useful for LED specifications, lighting fixture design, camera settings, and scientific research involving light intensity.

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