Illuminance Converter
Convert illuminance values between lux, foot-candles, phot, and nox with reference lighting levels
All processing happens in your browser. No data is uploaded.
Illuminance Converter
Convert illuminance values between lux, foot-candles, phot, and nox with reference lighting levels
🔒All processing happens in your browser. No data is uploaded.
Lux (lx)
Foot-candles (fc)
Phot (ph)
Nox (nx)
Reference Illuminance Levels
Full moon: ~1 lx
Street lighting: ~15 lx
Office: ~500 lx
Overcast day: ~1,000 lx
Full daylight: ~25,000 lx
Direct sunlight: ~100,000 lx
Conversion Formulas
1 fc = 10.7639 lx
1 ph = 10,000 lx
1 nx = 0.001 lx
1 lx = 0.0929 fc