Light Converters
Illumination Converter
Convert illuminance between lux and foot-candles. Office lighting is typically 300–500 lux; full daylight is 10,000–25,000 lux.
ILLUMINATION CONVERTER — INSTANT RESULT
All supported units — illumination
| Unit | Symbol | To lux (lx) | From lux (lx) |
|---|---|---|---|
| Lux (lumen/m²) | lx | 1 lx = 1 lx | 1 lx = 1 lx |
| Foot-candle (lumen/ft²) | fc | 1 fc = 10.7639104 lx | 1 lx = 0.09290304 fc |
| Phot | ph | 1 ph = 10,000 lx | 1 lx = 0.0001 ph |
| Nox | nx | 1 nx = 0.001 lx | 1 lx = 1,000 nx |
| Meter-candle | m·cd | 1 m·cd = 1 lx | 1 lx = 1 m·cd |
| Flame | flame | 1 flame = 43.0556417 lx | 1 lx = 0.02322576 flame |
Popular illumination conversions
Frequently asked questions
What units does this illumination converter support?
It supports 6 units: Lux (lumen/m²) (lx), Foot-candle (lumen/ft²) (fc), Phot (ph), Nox (nx), Meter-candle (m·cd), Flame (flame).
What is the base unit of illumination?
The SI reference unit is the lux (lx). Every conversion is computed by converting the input to the base unit, then from the base unit to the target unit, so chained precision is preserved.
Is this converter accurate?
Yes. Conversion factors use exact legal definitions where they exist (for example 1 in = 25.4 mm exactly) and CODATA/ISO constants otherwise. Results are shown to up to 10 significant figures.