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Measure light in lux & foot-candles. Save readings, calibrate & export to CSV
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.