2D Room Layout Planner
Build a printable two-dimensional room layout model from grid, fixture, and obstacle assumptions.
Calculator library
Latest calculators
Room Layout with Doors and Windows
Generate a room grid while keeping door and window opening clearances visible.
Retrofit Downlight Swap Checker
Check basic cut-out, dimming, and energy-use differences when replacing an existing downlight with an LED fitting.
Lighting Retrofit Scenario Comparison
Compare repeatable retrofit scenarios by annual kWh, annual net operating cost, and simple lifecycle cost.
Room Area and Volume Calculator
Calculate rectangular room area, volume, perimeter, and ceiling height from metric dimensions.
Lighting Product Datasheet Review
Check whether key lighting product and installation-data fields are present for design handoff.
Printable Lighting Layout Worksheet
Turn a room, fixture coordinate list, and assumptions into a plain-text printable worksheet.
Lighting Payback Period Calculator
Estimate simple payback from upfront cost, annual energy savings, maintenance savings, and other annual savings.
Pathway Lighting Planner
Estimate private pathway fixture spacing, step markers, width coverage, and glare-review prompts.
Outdoor Path and Driveway Layout Planner
Place path or driveway fixtures along repeatable segments with an explicit side and boundary assumption.