TechTools

Luminous Intensity Converter

From
To
Sig. figures:

Candela

cd

1(input)

Millicandela

mcd

1000

Kilocandela

kcd

0.001

Megacandela

Mcd

0.000001

Microcandela

μcd

1.00000e+6

Lumen per steradian

lm/sr

1

Candlepower (international)

cp

1

Hefnerkerze (German, HK)

HK

1.10742

Carcel

carcel

0.102669

Bougie décimale (French)

bd

1

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Convert luminous intensity across 10 units: SI (cd, mcd, μcd, kcd, Mcd, lm/sr) and historical (candlepower = 1 cd, Hefnerkerze ≈ 0.903 cd, carcel ≈ 9.74 cd, bougie décimale). Reference: candle ≈ 1 cd, 100 W bulb ≈ 120 cd, car low-beam 700–1200 cd, lighthouse 1–10 Mcd. 100% browser-based.

How to Use

  1. 1Type a luminous intensity value (e.g. 1 for 1 candela)
  2. 2Select your starting unit (e.g. cd, candlepower, Hefnerkerze, carcel)
  3. 3Select your target unit - the result appears instantly
  4. 4All 10 conversions appear across SI and Historical groups
  5. 5Hover any row to copy or use as input; click ⇄ to swap
  6. 6Open 'Luminous intensity reference' for common light source values

Features

  • 10 luminous intensity units: SI (cd, mcd, μcd, kcd, Mcd, lm/sr) and historical (candlepower, Hefnerkerze, carcel, bougie décimale)
  • Reference: candle, 100 W bulb, car headlight, lighthouse
  • Adjustable significant figures and scientific notation toggle
  • One-click copy per result
  • 100% browser-based

Frequently Asked Questions

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