Illumination Converter
Convert illuminance between lux and foot-candles.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter a light-level value and choose a from/to unit to convert between lux and foot-candles.
Your result
46.452
Converted value
AI explanation
Formula
Converted value = amount × (from-unit-to-lux factor) ÷ (to-unit-to-lux factor)Worked example
500 lux to foot-candles
| Field | Value |
|---|---|
| Amount | 500 |
| From unit | lux |
| To unit | footcandle |
| Converted value | 46.4516 |
Assumptions
- 1 foot-candle is defined exactly as 1 lumen per square foot, derived from the exact international foot (0.3048m): 1 fc = 10.7639... lux.
Frequently asked questions
What is a typical office lighting level?
300-500 lux (about 28-46 foot-candles) is typical for general office work; reading and fine detail work often calls for 500-750 lux.
Is lux or foot-candle more commonly used?
Lux is the SI (metric) unit used internationally, including in India; foot-candles remain common in US lighting standards and some imported lighting equipment specifications.
What is illuminance measuring?
Illuminance measures how much light falls on a surface — different from luminance, which measures how much light is reflected or emitted toward the eye (see the Luminance Converter).