What is Footcandles?
Footcandles (fc) measure illuminance, or the amount of light falling onto a surface. One footcandle represents the illuminance on a one-square-foot surface from a uniform source of light with an intensity of one candela.
What is Footcandles Unit System:
- 1 footcandle equals approximately 10.76391 lux.
- Footcandles belong to the imperial system.
What is Lux?
Lux (lx) is the SI (International System) unit of illuminance, measuring the intensity of light that reaches or passes through a surface. It indicates how much visible light falls on a specific area.
Unit System:
- Lux is a metric unit.
- 1 lux = 0.09290304 footcandles.
You can convert Footcandles to Lux using the following formula. Ev(lx) = Ev(fc) / 0.09290304 = Ev(fc) × 10.76391
Footcandles to Lux and Lux to Footcandles Conversion
Formula: Footcandles to Lux Conversion
To convert footcandles (fc) to lux (lx):
\[ \text{Lux} = \text{Footcandles} \times 10.76391 \]
Where:
- \(\text{Lux}\) = Illuminance in lux
- \(\text{Footcandles}\) = Illuminance in footcandles
Formula: Lux to Footcandles Conversion
To convert lux (lx) to footcandles (fc):
\[ \text{Footcandles} = \frac{\text{Lux}}{10.76391} \]
Where:
- \(\text{Footcandles}\) = Illuminance in footcandles
- \(\text{Lux}\) = Illuminance in lux
Example Calculation
If the illuminance is 50 footcandles, convert to lux:
\[ \text{Lux} = 50 \times 10.76391 = 538.20 \, \text{lux} \]
If the illuminance is 500 lux, convert to footcandles:
\[ \text{Footcandles} = \frac{500}{10.76391} = 46.47 \, \text{fc} \]
Footcandles vs. Lux
| Aspect | Footcandles (fc) | Lux (lx) |
|---|---|---|
| Unit System | Imperial | Metric |
| Definition | Illuminance from a uniform light source one foot away | Illuminance from a uniform light source over a square meter |
| Conversion | 1 footcandle = 10.76391 lux | 1 lux = 0.09290304 footcandles |
| Usage Regions | Primarily in the United States | Used worldwide, especially in Europe |
| Applications | Lighting design, horticulture, photography | Lighting standards, energy evaluation |
Footcandles (Fc) to Lux conversion table
| Footcandles (fc) | Lux (lx) |
|---|
| 50 fc | 538.19 lx |
| 1 fc | 10.764 lx |
| 100 fc | 1076.39 lx |
| 200 fc | 2152.78 lx |
| 30 fc | 322.92 lx |
| 400 fc | 4305.56 lx |
How to use Footcandles to Lux Calculator
- Step 1: Find the illuminance in footcandles (fc) that you want to convert to lux (lx).
- Step 2: Enter the value in footcandles into the input field of the calculator.
- Step 3: Press the “Convert” button to initiate the conversion.
- Step 4: The result in lux will be displayed immediately, calculated by multiplying the footcandles value by 10.76391.
- Step 5: Use the displayed lux value for your desired application or measurement.