Lighting Calculators
Photometry and lighting calculators: candela, lumens, lux, foot-candles and watts.
Candela to Lumens Calculator
Convert luminous intensity (candela) and apex angle to luminous flux (lumens).
Lumens to Candela Calculator
Convert luminous flux (lumens) and apex angle back to luminous intensity (candela).
Candela to Lux Calculator
Convert a point source luminous intensity (candela) and distance to illuminance (lux).
Lux to Candela Calculator
Convert illuminance (lux) and distance back to point-source luminous intensity (candela).
Lumens to Lux Calculator
Convert luminous flux (lumens) and lit area to average illuminance (lux).
Lux to Lumens Calculator
Convert illuminance (lux) and area back to required luminous flux (lumens).
Footcandles to Lux Calculator
Convert imperial illuminance foot-candles (fc) to SI lux (lx).
Lux to Footcandles Calculator
Convert SI lux (lx) to imperial foot-candles (fc).
Lumens to Millicandela Calculator
Convert luminous flux (lumens) and apex angle to luminous intensity (millicandela).
Millicandela to Lumens Calculator
Convert luminous intensity (millicandela) and apex angle to luminous flux (lumens).
Lumens to Watts Calculator
Convert luminous flux (lumens) and luminous efficacy to power (watts).
Watts to Lumens Calculator
Convert power (watts) and luminous efficacy to luminous flux (lumens).