Illuminance Converter

Enter Illuminance Value:

From Unit:

Lux (lx)Foot-candle (fc)Phot (ph)Nox (nx)Lumens per square meter (lm/m²)Lumens per square foot (lm/ft²)

To Unit:

Lux (lx)Foot-candle (fc)Phot (ph)Nox (nx)Lumens per square meter (lm/m²)Lumens per square foot (lm/ft²)

Conversion Options

Show All UnitsDisplay conversion in all illuminance units

Conversion Result

All Illuminance Units:

Lux (lx):0

Foot-candle (fc):0

Phot (ph):0

Nox (nx):0

Lumens per square meter (lm/m²):0

Lumens per square foot (lm/ft²):0

Illuminance Information:

Enter an illuminance value to see information

Note: This tool converts between different illuminance units used in lighting and photometry.

About This Illuminance Converter

This tool converts between different illuminance measurement units including lux, foot-candles, and phots. Illuminance measures how much luminous flux is spread over a given area and is crucial in lighting design, photography, and architectural planning.

How to Use This Converter

Step-by-Step Guide:

1. Step 1: Enter the illuminance value you want to convert
2. Step 2: Select the unit you're converting from
3. Step 3: Select the unit you want to convert to
4. Step 4: Click "Convert Illuminance" to see results
5. Step 5: View additional illuminance information
6. Step 6: Copy or clear results as needed

Conversion Formulas:

• Lux to Foot-candles: 1 fc = 10.764 lx
• Lux to Phots: 1 ph = 10,000 lx
• Lux to Nox: 1 nx = 0.001 lx
• Lux to Lumens/m²: 1 lx = 1 lm/m²
• Lux to Lumens/ft²: 1 lx ≈ 0.0929 lm/ft²
• Foot-candles to Lux: 1 lx ≈ 0.0929 fc

Example Conversions:

Input: 500 lux to foot-candles
Output: 46.45 fc

Input: 20 foot-candles to lux
Output: 215.28 lx

Input: 1 phot to lux
Output: 10,000 lx