
2026-05-12
Introducing CircadianLab: Free Browser-Based Lighting Simulation with mel-EDI, Glare, and Daylight
CircadianLab is a free, browser-based lighting simulator that calculates melanopic EDI (mel-EDI per CIE S 026:2018, formerly EML), illuminance in lux and foot-candles, UGR glare, and daylight through windows and skylights. WebGPU-accelerated radiosity, real IES photometry, unified sun-plus-electric solve, and built-in WELL v2 and ANSI/IES RP-46-25 compliance. No install, no signup.
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