calculand - Light formulas
Unit converter
Quantity converter
Numeral systems
Calculate primes
Convert WARP
Volume formulas
Area formulas
Length formulas
Energy formulas
Force formulas
Pressure formulas
Power formulas
Velocity formulas
Heat formulas
Light formulas
Exponents, roots
Logarithm
Circular functions
Elements and materials
Formula collection
Unit list
Quantity list
Numeral systems list
Impressum/Contact
Φᵥ/P
Iᵥ·Ω/P
Iᵥ·Ω·t/E
<
>
Color temperature
Color temperature shift
Exposure
Exposure index
Exposure time
Exposure value
Film speed
Illuminance
Luminance
Luminosity
Luminous efficacy
Luminous energy
Luminous flux
Luminous intensity
Refractive index
f-Number
Luminous efficacy -
ηᵥ = Φᵥ / P
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
aW - Attowatt
BTU/h - British thermal unit per hour
BTU/min - British thermal unit per minute
BTU/s, btu/s - British thermal unit per second
cal/h - Calorie per hour
cal/min - Calorie per minute
cal/s - Calorie per second
cW - Centiwatt
ch - Cheval vapeur
daNm/s - Decanewton metre per second
daW - Decawatt
dW - Deciwatt
dyncm/s - Dyne centimetre per second
dynm/s - Dyne metre per second
eV/s - Electronvolt per second
erg/s - Erg per second
EW - Exawatt
fW - Femtowatt
GW - Gigawatt
hW - Hectowatt
hp, bhp - Horsepower (Brake horsepower)
PS, hp(M) - Horsepower (metric)
J/d - Joule per day
J/h - Joule per hour
J/min - Joule per minute
J/s - Joule per second
J/y, J/a - Joule per year
kcal/h - Kilocalorie per hour
kcal/min - Kilocalorie per minute
kcal/s - Kilocalorie per second
kg m²/s³ - Kilogram square metre per second cubed
kpm/s - Kilopond metre per second
kW - Kilowatt
mp - Manpower
MW - Megawatt
mkp/s - Metre kilopond per second
µW - Microwatt
mW - Milliwatt
nW - Nanowatt
Nm/s - Newton metre per second
Ω A² - Ohm ampere squared
Pa m³/s - Pascal cubic metre per second
PW - Petawatt
pW - Picowatt
P(P) - Planck power
p - Poncelet
pm/s - Pond metre per second
lb ft²/s³ - Pound square foot per second cubed
lb in²/s³ - Pound square inch per second cubed
TW - Terawatt
var - Var (Volt Ampere Reactive)
VA - Volt ampere
V²/Ω - Volt squared per ohm
W - Watt
yW - Yoctowatt
YW - Yottawatt
zW - Zeptowatt
ZW - Zettawatt
alm/W - Attolumen per watt
Cd sr s³/kg ft² - Candela steradian second cubed per kilogram square foot
Cd sr s³/kg in² - Candela steradian second cubed per kilogram square inch
Cd sr s³/kg m² - Candela steradian second cubed per kilogram square metre
Cd sr s³/lb ft² - Candela steradian second cubed per pound square foot
Cd sr s³/lb in² - Candela steradian second cubed per pound square inch
Cd sr s/eV - Candela steradian second per electronvolt
Cd sr s/J - Candela steradian second per joule
clm/W - Centilumen per watt
dalm/W - Decalumen per watt
dlm/W - Decilumen per watt
Elm/W - Exalumen per watt
flm/W - Femtolumen per watt
Glm/W - Gigalumen per watt
hlm/W - Hectolumen per watt
klm/W - Kilolumen per watt
lumberg/J - Lumberg per joule
lmh/J - Lumen hour per joule
lm/W - Lumen per watt
lms/eV - Lumen second per electronvolt
lms/erg - Lumen second per erg
lms/J - Lumen second per joule
lms/kWh - Lumen second per kilowatt hour
lms/Wh - Lumen second per watt hour
lumerg/J - Lumerg per joule
Mlm/W - Megalumen per watt
µlm/W - Microlumen per watt
mlm/W - Millilumen per watt
nlm/W - Nanolumen per watt
Plm/W - Petalumen per watt
plm/W - Picolumen per watt
talbot/J - Talbot per joule
Tlm/W - Teralumen per watt
ylm/W - Yoctolumen per watt
Ylm/W - Yottalumen per watt
zlm/W - Zeptolumen per watt
Zlm/W - Zettalumen per watt
/
=
© 2010 - 2025 Norbert Schneider