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Lighting tools
Calculators that give you a starting point based on established design rules. Results are approximate; a final design needs the room plan.
How many downlights does the room need?
Lumen method: area × required lux ÷ (utilisation factor × maintenance factor) ÷ lumens per fitting.
Spacing by ceiling height and beam angle
Light pool diameter at seated height, suggested spacing between fittings and from the wall, and wall-washer position.
Wall-washer rules from ERCO’s published recommendations. The best reference is always the fitting’s datasheet.
Diagnose your lighting problem
Choose what you notice at home..
Choose a symptom to see the causes and the fix..
Pre-purchase checklist
Tick what you’ve confirmed in the quotation or datasheet.
Colour temperature & beam angle lab
Move the two sliders to see how kelvin and beam angle affect a wall and a painting.