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.