Illuminance Converter

Professional illuminance converter with detailed breakdowns and lighting applications

Conversion Result

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Lighting Examples
500 lx (Office) 46.5 fc
10 lx (Dim room) 0.93 fc
100,000 lx (Sunlight) 9,290 fc
200 fc (Bright office) 2,153 lx

How to Use the Illuminance Converter

Our comprehensive illuminance converter provides accurate illuminance measurements for all your lighting design, architecture, and photometry needs:

💡 Lighting Design & Architecture

Essential for lighting designers, architects, and building engineers working with interior and exterior lighting systems. Convert between lux and foot-candles for accurate illumination calculations, building codes compliance, and energy-efficient lighting design.

📏 Engineering & Standards

Critical for electrical engineers, facility managers, and safety professionals ensuring proper illumination levels for workplaces, roads, and public spaces. Handle precise illuminance conversions for lighting standards, OSHA compliance, and workplace safety requirements.

📷 Photography & Film

Perfect for photographers, cinematographers, and lighting technicians measuring ambient light levels and setting up professional lighting rigs. Convert illuminance units for exposure calculations, studio lighting design, and consistent lighting conditions.

All calculations follow international photometry standards with support for both SI and imperial illuminance units. Perfect for lighting professionals, architects, engineers, and photographers needing accurate illuminance conversions.

Frequently Asked Questions

Our converter supports all standard illuminance units: lux (lx), foot-candle (fc), phot (ph), foot-lambert (fl), stilb (sb), apostilb (ap), blondel (bl), skot (sk), plus millilux (mlx) and kilolux (klx). Perfect for lighting design, architecture, and photometry applications.
Both lux and foot-candles measure illuminance (light falling on a surface). Lux is the metric unit (lumens per square meter), while foot-candles is the imperial unit (lumens per square foot). 1 foot-candle = 10.764 lux. Lux is used internationally, while foot-candles are common in North America.
Typical illuminance levels: moonlight (~0.1 lx), dim indoor lighting (~10 lx), living room (~50 lx), office lighting (~500 lx), bright office (~1000 lx), overcast day (~10,000 lx), direct sunlight (~100,000 lx). These values guide lighting design and standards compliance.
Yes! Our illuminance converter provides the precision needed for building codes, lighting standards, and architectural specifications. It handles all illuminance conversions required for ASHRAE standards, IES recommendations, and local building code compliance with professional accuracy.
Illuminance measures light falling on a surface (lux, foot-candles), while luminance measures brightness of a surface (nits, foot-lamberts). Illuminance is what you measure with a light meter; luminance is what your eyes see. Both are important for complete lighting design and analysis.