Lux to Foot-Candles Converter
Convert lux (lx) to foot-candles (fc) instantly. Type a value — the result updates as you type, and the swap button converts the other way.
Lux to Foot-Candles formula
fc = lx ÷ 10.763910417
1 lux = 0.0929 foot-candles · 1 foot-candle = 10.76 lux
To convert lux to foot-candles, divide the value by 10.763910417. For example, 500 lx:
fc = 500 ÷ 10.763910417fc = 46.45152
So 500 lx = 46.45 fc.
Mental math shortcut
Quick mental estimate: divide by 10. For 500 lx that gives about 50 fc — off by 3.55 fc (7.6%). Use the exact formula when precision matters.
Lux to Foot-Candles conversion table
Foot-Candles back to Lux
The same values converted the other way, rounded for everyday use:
| Foot-candles | Lux |
|---|---|
| 0.929 fc | 10 lx |
| 4.65 fc | 50.05 lx |
| 9.29 fc | 100 lx |
| 18.58 fc | 199.99 lx |
| 27.87 fc | 299.99 lx |
| 46.45 fc | 499.98 lx |
| 69.68 fc | 750.03 lx |
| 92.9 fc | 999.97 lx |
About the units
Lux (lx)
Lux is the SI unit of illuminance: one lumen per square meter. Offices are typically lit to 300–500 lux.
Foot-candles (fc)
A foot-candle is one lumen per square foot, about 10.76 lux. US lighting design often uses foot-candles.
Frequently asked questions
How many foot-candles are in a lux?
One lux equals 0.0929 foot-candles.
What is 500 Lux in Foot-Candles?
500 lx = 46.45 fc.
How do I convert Foot-Candles back to Lux?
Multiply the foot-candles by 10.763910417.