Illuminance Converter
Convert between lux, foot-candles, phot, and other illuminance/light intensity units.
Our free Illuminance Converter lets you convert between lux, foot-candles, phot, and other illuminance/light intensity units. It is built for travelers, cooks, students, scientists, and anyone working across measurement systems who need fast, reliable results without installing software or creating an account.
Illuminance Converter runs entirely in your browser on CalculatorsPlus — enter your values, get instant results, and copy or share your output in one click. Your data never leaves your device; we do not store inputs on any server.
Switching between metric and imperial units is a daily need worldwide. The illuminance converter uses standard conversion factors so you get consistent results for recipes, travel, homework, and technical specifications.
Results update in real time as you change inputs, so you can explore "what if" scenarios — adjust one variable at a time to see how it affects the outcome before committing to a purchase, plan, or decision.
This page includes step-by-step instructions, frequently asked questions, and practical tips below the calculator. Bookmark it for repeat use — many unit conversion tasks come up weekly during projects, studies, or financial planning.
Common Uses
- ✓Convert recipe measurements between US and metric units
- ✓Translate specs for international projects or products
- ✓Science and engineering homework unit checks
- ✓Travel, fitness, and weather temperature conversions
How to Use the Illuminance Converter
- 1
Select illuminance unit
Choose lux or foot-candles.
- 2
Enter brightness
Input the illuminance value.
- 3
Convert
Use in lighting design or photography.
💡 Tips & Tricks
- •Smartphone light meter apps give rough lux readings.
- •Photography: EV and lux relate through exposure settings.
- •Workplace ergonomics standards cite lux for task lighting.
Frequently Asked Questions
How do I convert lux to foot-candles?
What lux level for an office?
What is the difference between lux and lumens?
How bright is direct sunlight?
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