Recessed Light Calculator

A free web tool for the early layout of recessed ceiling fixtures in a rectangular room. Homeowners and remodelers can enter the room dimensions and ceiling height, then change target illumination, fixture output or beam angle to compare estimated counts, spacing and offsets on a 2D plan. Export an annotated PNG for discussion or save fixture coordinates and the calculation inputs to CSV. No account or install is needed. It is a preliminary general lighting estimate, not an on-site reading, electrical design or approval.

• Web

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