Illuminance Converter

Lighting plays a critical role in our daily lives, whether in architecture, photography, engineering, or workplace safety.

But with so many different units of measurement, converting between them can quickly become confusing. That’s where our Illuminance Converter comes in.

This free online tool helps you seamlessly convert between microlux, millilux, lux, kilolux, lumen per square meter, lumen per square centimeter, foot-candle, phot, and nox.

Whether you’re calculating light intensity for a photography shoot, evaluating office lighting levels, or comparing standards for energy efficiency, the Illuminance Converter to lux saves time and ensures accuracy.

What is Illuminance?

Illuminance measures how much light hits a surface, typically expressed in lux (lx).

One lux equals one lumen per square meter. Unlike luminous flux, which measures the total light emitted, illuminance tells you how much of that light actually reaches a given surface.

For example:

• A typical office might require 300-500 lux.
• Full moonlight is around 0.3 lux.
• Direct sunlight can exceed 100,000 lux.

Different industries use different units (like foot-candles in the US), so having a reliable converter is essential.

How to Use the Illuminance Converter

1. Enter a Value - Add the amount of light you want to convert.
2. Select a Unit - Choose from microlux, lux, lumen/m², foot-candle, phot, and more.
3. Click Convert - Instantly see the equivalent values across all units.
4. Use Sample or Reset - Try quick examples or reset to start fresh.

In just a few clicks, you can compare lighting standards across different measurement systems.

Why Use This Tool?

• Accurate & Instant Results - No need for manual math or formulas.
• Covers Multiple Units - From lux to lumen/m², foot-candles, and beyond.
• Time-Saving for Professionals - Essential for engineers, photographers, and architects.
• Educational Aid - Helps students understand unit relationships.
• Completely Free & Online - No downloads or sign-ups required.

FAQs

How do you calculate illuminance?

Illuminance (lux) is calculated as: E = Φ / AWhere E = illuminance in lux, Φ = luminous flux in lumens, and A = area in square meters.

How do you convert illumination to lux?

To convert to lux, divide lumens by area (in square meters). For example, 1,000 lumens over 10 m² = 100 lux.

What is the unit of conversion for lux?

The SI unit of illuminance is lux (lx), equivalent to one lumen per square meter.

How bright is 3000 lux?

A brightness of 3,000 lux is similar to bright indoor studio lighting or a well-lit office.

How many lux is full sun?

Direct sunlight at noon can reach between 100,000 and 120,000 lux.

Practical Applications

• Photography & Videography - Ensure correct light exposure by converting foot-candles or lux.
• Architecture & Design - Meet building codes and workplace safety standards.
• Engineering - Assess lighting for industrial spaces, tunnels, and street lamps.
• Education - A helpful study tool for students learning about lighting physics.
• Everyday Use - Compare lightbulb outputs, LED brightness, or workspace lighting.

Conclusion

Understanding light intensity is crucial for everything from designing safe workplaces to capturing the perfect photo.

With so many different units of measurement, it’s easy to get lost in conversions.

Our Illuminance Converter to lux makes the process simple, fast, and reliable.

Use it to convert microlux, lux, foot-candles, lumen/m², phot, and more, instantly.

Whether you’re an engineer, student, or simply curious about light levels, this free online tool ensures you’ll always have the right numbers at your fingertips.

Bookmark the Illuminance Converter today and make lighting calculations effortless.