Lux Meter: Light Meter

Lux Meter is the most accurate light meter, illuminance meter, and lux measurement tool for Android. Turn your phone into a pocket photometer that reads ambient light in lux and foot-candles in real time, with min/avg/max tracking and a calibration offset for reliable readings. Whether you are setting up a photo shoot, dialing in a grow light, or checking that a workspace meets recommended light levels, Lux Meter gives you a fast, clear measurement anywhere.

▶ MAIN FEATURES
• Illuminance in lux and foot-candles (fc)
• Real-time light level from the ambient light sensor
• Min / avg / max tracking while you measure
• Calibration offset for accurate, repeatable readings
• Light-level recommendations for rooms, offices, and plants
• Hold to freeze the current reading
• Measurement history to compare locations
• Large, easy-to-read display
• Dark mode
• Works fully offline, no account or sign-up

▶ HOW TO USE
1. Open Lux Meter and point the ambient light sensor at the light.
2. Read the illuminance value in lux (or switch to foot-candles).
3. Watch min, avg, and max update live as you move.
4. Tap Hold to freeze the current reading.
5. Set a calibration offset to match a known meter.

▶ WHO USES IT
• Photographers & videographers checking lighting
• Plant & grow-light growers dialing in light levels
• Office & workspace safety and ergonomics checks
• Interior & home lighting design
• Electricians verifying installations
• Students & teachers in science class

Lux Meter uses the ambient light sensor built into your phone. Sensor placement and cover glass vary by device, so readings are approximate; for relative or repeatable readings, calibrate against a known light meter using the calibration offset. Download Lux Meter and measure the light around you in lux and foot-candles today.