Instantly convert between foot-candles (fc) and lux (lx). Both measure illuminance — light falling on a surface — but foot-candles are used in the US while lux is the SI standard used everywhere else.
Live conversion — type in either box
Foot-candles (fc)
1 fc = 10.764 lux
⇄
Lux (lx)
1 lux = 0.0929 fc
1 fc = 10.764 lux
Lux = foot-candles x 10.764 | Foot-candles = lux / 10.764
Illuminance scale — where your value sits
0.1 fc / 1 lux10 fc / 100 lux50 fc / 500 lux100 fc / 1000 lux1000+ fc
Illuminance reference — common spaces and standards
Setting / taskFoot-candlesLuxLevel
Foot-candles to Lux
1 fc10.76 lux
5 fc53.8 lux
10 fc107.6 lux
25 fc269 lux
50 fc538 lux
100 fc1076 lux
500 fc5382 lux
Lux to Foot-candles
10 lux0.93 fc
50 lux4.6 fc
100 lux9.3 fc
300 lux27.9 fc
500 lux46.5 fc
1000 lux92.9 fc
10000 lux929 fc
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