Lux Level Calculator
How bright should a room be? Pick the space or task for the recommended lux level, then enter the floor area to see the total lumens the room needs.
Task spots (counter, mirror, desk) need a bright local layer on top of the room's softer ambient level — that is what layered lighting is for.
for living room (general).
= 150 lux x 13 sq m. Spread this across fixtures with the lumen calculator.
Indicative only. These are typical maintained levels (aligned with the IS 3646 ranges) — the right number also depends on the users' age, wall colours and the mood you want. This is a design aid; all wiring and circuits are a licensed electrician's job. Turn lumens into fixtures with the lumen requirement calculator.
Related Guides — Deep-dive reading
Functional vs Ambient vs Accent Lighting: What Each Does (2026)
The four jobs light does in a room — ambient fill, task/functional brightness, accent contrast and mood glow — what each is for, the fixtures it wants, how bright it should be relative to the others, and the mistake people make with each.
LightingHome Lighting Design: Layers, Lumens & Room-by-Room Planning
How to light a home well — the three layers of ambient, task and accent light, how much light each room actually needs, why lumens matter more than watts, and a room-by-room plan you can hand to your electrician and designer.
Electrical & WiringCommon Home Lighting Mistakes in India (and How to Fix Them) (2026)
The most common lighting mistakes in Indian homes — one bright tubelight per room, everything blue-white, glare, no dimming, dark stairs — and the specific, affordable fix for each, plus the one habit that causes half of them: not planning the scheme before the electrician wires.
LightingRelated Tools — You may also find these useful
Beam Angle Calculator
The pool of light a spotlight or downlight throws, from the beam angle and distance, with a guide to the right angle.
Lighting CalculatorColour Temperature Selector
The right Kelvin for each room — warm to cool — with why it fits and the CRI to look for.
Lighting PlannerFixture Quantity Calculator
How many downlights a room needs and the grid to lay them in — rows, columns, wall offset and pitch.
Lighting Calculator