calculand - Light formulas
Unit converter
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Numeral systems
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Convert WARP
Volume formulas
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Light formulas
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Impressum/Contact
Φᵥ/Ω
Φᵥ/(2·π·(1-cos(α/2)))
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Color temperature
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Exposure
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Exposure value
Film speed
Illuminance
Luminance
Luminosity
Luminous efficacy
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Luminous intensity
Refractive index
f-Number
Luminous intensity -
Iᵥ = Φᵥ / Ω
alm - Attolumen
Cd msr - Candela millisteradian
Cd (´)² - Candela square arcminute
Cd (´´)² - Candela square arcsecond
Cd cm²/m² - Candela square centimetre per square metre
Cd (°)² - Candela square degree
Cd in²/ft² - Candela square inch per square foot
Cd sr - Candela steradian
CP sr - Candlepower steradian
carcel sr - Carcel steradian
clm - Centilumen
dalm - Decalumen
dlm - Decilumen
Elm - Exalumen
flm - Femtolumen
Glm - Gigalumen
hlm - Hectolumen
klm - Kilolumen
lm - Lumen
Mlm - Megalumen
µlm - Microlumen
mlm - Millilumen
nlm - Nanolumen
Plm - Petalumen
plm - Picolumen
Tlm - Teralumen
Violle sr - Violle steradian
ylm - Yoctolumen
Ylm - Yottalumen
zlm - Zeptolumen
Zlm - Zettalumen
asr - Attosteradian
csr - Centisteradian
dasr - Decasteradian
dsr - Decisteradian
fsr - Femtosteradian
µsr - Microsteradian
msr - Millisteradian
nsr - Nanosteradian
psr - Picosteradian
4πsr - Sphere
(´)² - Square arcminute
(´´)² - Square arcsecond
(ᶜ)² - Square centesimal arcminute
(ᶜᶜ)² - Square centesimal arcsecond
cgon² - Square centigon
cm²/m² - Square centimetre per square metre
dm²/m² - Square decimetre per square metre
(°)² - Square degree
ft²/in², sq. ft./sq. in. - Square foot per square inch
ft²/m², sq. ft./m² - Square foot per square metre
gon² - Square gon
in²/ft², sq. in./sq. ft. - Square inch per square foot
in²/in², sq. in./sq. in. - Square inch per square inch
in²/m², sq. in./m² - Square inch per square metre
m²/m² - Square metre per square metre
mgon² - Square milligon
mm²/m² - Square millimetre per square metre
(´´´)² - Square tertia
sr - Steradian
ysr - Yoctosteradian
zsr - Zeptosteradian
aCd - Attocandela
BLE - Berlin light unit (Berliner Lichteinheit)
Cd - Candela
CP - Candlepower
carcel - Carcel
cCd - Centicandela
DVWGK - DVWG-candle (Deutscher Verein der Gas- und Wasserfachmänner)
daCd - Decacandela
dCd - Decicandela
bd - Decimal candle, Bougie décimale
ECd - Exacandela
fCd - Femtocandela
GCd - Gigacandela
hCd - Hectocandela
HK - Hefner candle (Hefner-Kerze)
IK, bi - International candle (Bougie internationale)
kCd - Kilocandela
lm/msr - Lumen per millisteradian
lm/(4πsr) - Lumen per sphere
lm/(´)² - Lumen per square arcminute
lm/(´´)² - Lumen per square arcsecond
lm/(°)² - Lumen per square degree
lm/sr - Lumen per steradian
MCd - Megacandela
µCd - Microcandela
mCd - Millicandela
nCd - Nanocandela
NK - New candle (Neue Kerze)
PCd - Petacandela
photon - Photon
pCd - Picocandela
TCd - Teracandela
td - Troland
Violle - Violle
yCd - Yoctocandela
YCd - Yottacandela
zCd - Zeptocandela
ZCd - Zettacandela
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