Illuminance Converter - Convert Lux, Foot-candle, Lumen/m² & More Light Units
Result:
500 lx = 46.45113341 fc
How It Works
Enter Light Value
Input the illuminance value you want to convert
Select Units
Choose the light units you want to convert between
Common Examples
Office Lighting
500 lux = 46.45 foot-candles (standard office)
Photography
1000 lux = 92.9 foot-candles (bright indoor)
Daylight
10000 lux = 929 foot-candles (bright day)
Illuminance Converter Formulas
Lux to Foot-candle
fc = lx ÷ 10.764
Example: 500 lux = 500 ÷ 10.764 = 46.45 foot-candles
Foot-candle to Lux
lx = fc × 10.764
Example: 50 foot-candles = 50 × 10.764 = 538.2 lux
Lux to Phot
ph = lx ÷ 10000
Example: 5000 lux = 5000 ÷ 10000 = 0.5 phot
Lux to Nox
nx = lx × 1000
Example: 0.5 lux = 0.5 × 1000 = 500 nox
Calculation Table
| Lux | Foot-candle | Phot | Nox |
|---|---|---|---|
| 1 | 0.09 | 0.0001 | 1,000 |
| 5 | 0.46 | 0.0005 | 5,000 |
| 10 | 0.93 | 0.0010 | 10,000 |
| 50 | 4.65 | 0.0050 | 50,000 |
| 100 | 9.29 | 0.0100 | 100,000 |
| 200 | 18.58 | 0.0200 | 200,000 |
| 300 | 27.87 | 0.0300 | 300,000 |
| 500 | 46.45 | 0.0500 | 500,000 |
| 750 | 69.68 | 0.0750 | 750,000 |
| 1000 | 92.90 | 0.1000 | 1,000,000 |
| 1500 | 139.35 | 0.1500 | 1,500,000 |
| 2000 | 185.80 | 0.2000 | 2,000,000 |
| 3000 | 278.71 | 0.3000 | 3,000,000 |
| 5000 | 464.51 | 0.5000 | 5,000,000 |
| 10000 | 929.02 | 1.0000 | 10,000,000 |
Frequently Asked Questions
What is the difference between lux and foot-candle?
Lux and foot-candle both measure illuminance. Lux is the metric unit, while foot-candle is the imperial unit. 1 foot-candle equals 10.764 lux. Our illuminance converter handles both units easily.
How do I convert lux to foot-candle?
To convert lux to foot-candle, divide lux by 10.764. For example: 500 lux ÷ 10.764 = 46.45 foot-candles. This lighting calculator does this math automatically.
What is a phot in illuminance measurement?
A phot is a unit of illuminance equal to 10,000 lux. It is rarely used today but appears in some scientific contexts. Our illuminance converter includes phot for complete coverage.
Is this illuminance converter accurate for lighting design?
Yes, our illuminance converter is 100% accurate for lighting design. It uses exact conversion factors and is perfect for photography, architecture, and workplace lighting calculations.
Can I use this lighting calculator for photography?
Yes! This lighting calculator is perfect for photography. Convert between lux and foot-candle to match your light meter readings and camera settings for proper exposure.
About Illuminance Converter
Our illuminance converter makes light measurement simple and fast. When you need to convert lux to foot-candle or any other light unit, just enter your value and get instant results. This lighting calculator helps with photography, lighting design, and workplace safety.
The illuminance converter uses exact conversion factors for all light units. Lux and foot-candle are the most common units. There are 10.764 lux in one foot-candle. Our lighting calculator does all this math for you automatically.
This light measurement converter is useful for many tasks. Photographers use it for proper lighting setup. Architects use it for building design. Workers use it for safety compliance. Anyone can use this illuminance converter for light calculations.
The illuminance converter formulas are always accurate: Lux ÷ 10.764 = Foot-candles, Foot-candles × 10.764 = Lux. Whether you have 100 lux or 10000 lux, this lighting calculator gives you the right answer every time.
Why Use Our Lighting Calculator?
Easy to Use
Our illuminance converter is simple. Just type your light value and see the results instantly. No complex steps or confusing buttons.
Always Accurate
This lighting calculator uses exact conversion formulas. Every calculation is correct and reliable for your lighting design needs.
Free Lighting Calculator
Use this illuminance converter for free. No sign-up needed. Convert light units as many times as you want.
Works Everywhere
This lighting calculator works on phones, tablets, and computers. Use it anywhere you need light measurement conversions.