Beckify Electrical Engineering Toolbox
Lux / Light Level Meter
Camera-based relative light-level estimate with center-weighted sampling, PWM smoothing, optional one-point lux calibration, and a frame-rate-limited flicker FFT. Not a photometer. On-device camera only.
About this calculator
Use this free browser-based calculator to work through the relevant electrical inputs, review the result, and compare it with field conditions.
For design, installation, or safety decisions, verify assumptions against the applicable code edition, equipment documentation, and site requirements.
Open the interactive tool