Illuminance Converter
Convert illuminance between lux and foot-candles — the units behind lighting design, photography exposure and workplace light rules.
Enter a value
Result
500 lux (lx) =
46.4516 Foot-candle (fc)
500 × 0.0929031 = 46.4516
Show the working
- 1. Convert 500 Lux (lx) to luxs: 500 × 1 = 500.
- 2. Convert to Foot-candle (fc): 500 ÷ 10.7639 = 46.4516.
500 Lux (lx) in every unit
Typical light levels
- Full moonlit night
- 0.1–1 lux
- Street lighting
- 10–20 lux
- Home living room
- 100–300 lux
- Office desk lighting
- 500 lux
- Supermarket aisle
- 750 lux
- Overcast daylight
- 10,000 lux
Good to know: One foot-candle is 10.7639 lux — roughly the light of one candle one foot away.
About this tool
Convert illuminance between lux and foot-candles — for lighting design, photography and workplace standards.
Formula
1 fc = 10.7639 lx; 1 lx = 1 lumen/m²; 1 fc = 1 lumen/ft².
Reference values
- Office desk: ~500 lux
- 1 fc = 10.7639 lux
- Full daylight: 10,000+ lux
Questions people ask
How do you convert lux to foot-candles?
Divide lux by 10.7639: 500 lux ≈ 46.5 fc. One foot-candle is the light on a surface one foot from a standard candle.
How many lux is 100 foot-candles?
1,076.39 lux — multiply foot-candles by 10.7639.
Is lux the same as lumens?
No — lumens measure total light output; lux measures light falling on one square metre (1 lux = 1 lumen/m²).
Related tools
How we calculate this
Illuminance follows the SI lux (one lumen per square metre); the foot-candle is one lumen per square foot, giving the factor 10.7639. Source: BIPM (SI Brochure).
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