Lux Meter: Light Meter & FC

Measure how bright your space really is. Lux Meter turns your phone's ambient light sensor into a simple, accurate light meter that reads in lux (lx) and foot-candles (fc).
Point the top of your phone at the light, or lay it flat on your desk, and get a live reading with minimum, average and maximum values plus a 15-second graph.

▪️ LIVE LIGHT METER
• Smooth, stable readings in lux or foot-candles
• Min, average and max with session timer
• Live graph of the last 15 seconds
• Scene labels such as "Office work" or "Dark public area"

▪️ SAVE & EXPORT READINGS
• Save any measurement with a name
• Review past readings in History
• Export all readings to CSV for Excel or Google Sheets

▪️ CALIBRATE AGAINST A PRO METER
Phone sensors vary between models. Enter a reading from a reference lux meter and the app adjusts every measurement to match. Fine-tune or reset anytime.

▪️ BUILT-IN LUX GUIDE
Recommended light levels for bedrooms, offices, classrooms, workshops and more, so you know if your space is lit right.

▪️ DESIGNED FOR EVERYDAY USE
• Light and dark themes
• Screen stays on while measuring
• Remembers your preferred unit
• Small, fast and free

USEFUL FOR
Checking desk and reading light, setting up home offices, classrooms and workshops, growing plants indoors, and getting a quick light check before a photo or video shoot.

HOW TO GET THE BEST RESULTS
• The light sensor is near the top of the screen. Keep it uncovered.
• Hold still for a few seconds and read the average.
• Accuracy depends on your phone's sensor. Use calibration for the closest match to a professional meter.