Illuminance Converter

Illuminance Converter

Free Online Tool

Welcome to, where we offer the most reliable and user-friendly tools to make your technical and scientific tasks simpler and more efficient. Today, we're excited to introduce the Illuminance Converter, a versatile tool designed to cater to all your light measurement needs. Whether you're an architect, a lighting designer, a photographer, or a scientist, this tool is indispensable for ensuring precise and accurate light measurements.

Understanding Illuminance

Illuminance is a measure of how much luminous flux is spread over a given area. It is commonly measured in lux (lx), where one lux is equivalent to one lumen per square meter. Accurate conversion between different units of illuminance is crucial in various fields to ensure proper lighting conditions, energy efficiency, and compliance with standards.

Conversion Options with the Illuminance Converter

Our Illuminance Converter offers a wide range of conversion options, making it a comprehensive tool for all your lighting measurement needs. Here’s a detailed look at the available conversions:

Lux to Microlux

For highly sensitive light measurements, converting lux to microlux (μlx) is essential. This is particularly useful in environments with extremely low light levels, such as astronomical observations, where 1 lux equals 1,000,000 microlux.

Lux to Millilux

When precise measurements in low-light conditions are needed, converting lux to millilux (mlx) can be very helpful. Applications include specialized scientific research and low-light photography, where 1 lux equals 1,000 millilux.

Lux to Lux

This straightforward conversion ensures that your illuminance measurements remain consistent and accurate without any changes in scale.

Lux to Kilolux

For large-scale lighting applications, converting lux to kilolux (klx) is crucial. This is relevant in scenarios such as stadium lighting and large industrial facilities, where 1 kilolux equals 1,000 lux.

Lux to Lumen per Square Meter

Since lux is defined as lumens per square meter, this conversion reaffirms the standard unit for illuminance, ensuring consistency in measurement and reporting.

Lux to Lumen per Square Centimeter

In specialized applications requiring small-scale light distribution analysis, converting lux to lumen per square centimeter (lm/cm²) is necessary. This can be useful in fields such as material sciences and detailed photometric studies.

Lux to Foot-Candle

In many countries, especially the United States, foot-candle (fc) is a common unit for illuminance. Converting lux to foot-candle is essential for projects and applications that adhere to the Imperial system, where 1 lux equals approximately 0.092903 foot-candles.

Lux to Phot

For high-intensity light measurements, converting lux to phot (ph) is useful. The phot is a CGS (centimeter-gram-second) unit of illuminance, where 1 phot equals 10,000 lux.

Lux to Nox

The nox is an older unit of measurement for illuminance, now mostly of historical interest. However, in some specialized fields or contexts, converting lux to nox might be required, where 1 lux equals 1,000 nox.

How to Use the Illuminance Converter

Our Illuminance Converter is designed to be intuitive and user-friendly, making it accessible to professionals and enthusiasts alike. Follow these simple steps to get accurate conversions:

Step-by-Step Guide:

  1. Select the Conversion Type: Choose the specific conversion you need from the provided options.
  2. Input the Value: Enter the illuminance value in the starting unit.
  3. Get Instant Results: The tool will provide an accurate conversion to the desired unit.


  1. Navigate to the Converter: Go to the Illuminance Converter on
  2. Choose Your Units: Select "Lux to Foot-Candle" from the conversion options.
  3. Enter the Value: Input "500" lux.
  4. View Results: Instantly receive the conversion result of approximately "46.45 foot-candles."

Why Choose Our Illuminance Converter?

  • Accuracy: Our tool ensures precise and reliable conversions, critical for technical and scientific applications.
  • User-Friendly Interface: Designed for ease of use, making it accessible to both professionals and hobbyists.
  • Versatility: Covers a wide range of units, accommodating various fields and applications.
  • Free Access: Available at no cost, providing high-quality tools for everyone.


The Illuminance Converter at is an indispensable tool for anyone working with light measurements. Its wide range of conversion options, combined with accuracy and ease of use, makes it ideal for various applications. Visit today to try the Illuminance Converter and explore our other free tools designed to make your technical tasks easier and more efficient.

Illuminate with precision and convert with confidence!


Richard Hayes

CEO / Co-Founder

Enjoy the little things in life. For one day, you may look back and realize they were the big things. Many of life's failures are people who did not realize how close they were to success when they gave up.

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