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Illuminance Converter

Illuminance Converter
Enter Illuminance Value:
From Unit:
To Unit:

Conversion Options

Show All UnitsDisplay conversion in all illuminance units

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

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