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Free · Instant

Lighting & Lumens
Calculator

Get the right brightness for each room: the lumens you need and how many lights. In seconds.

The quick answer

To light a room well, multiply its area in square metres by the recommended lux for that room (about 150 for living and bedrooms, 300 for kitchens and study). A 12 × 12 ft living room needs roughly 2,000 lumens, about 3 LED panels. This free calculator gives the lumens and number of fixtures.

Calculate lighting How it works
≈ 1,800 lm
3 lights on
1
2
3
the right brightness

How much light does your room need?

Pick your room and size, then choose how bright you like it. We give the lumens you need and how many lights to fit.

Step 1 · Room

Each room has a recommended lux level for comfortable, useful light.

Step 2 · Room size
sq ft

The room’s floor area. Not sure? Switch to length × width.

ft
×
ft

Floor area = length × width.

Step 3 · Brightness

Cosy is softer, bright is task-ready. Balanced suits most rooms.

Your lighting estimate appears here

Pick a room and size, then tap calculate.

Indicative only. Real needs vary with ceiling height, wall colours, fixture type and how you layer lighting. Use it as a starting point. We can design and fit layered lighting for you with verified materials.

the full plan

Get your lighting plan and a quote

Your lumens and fixture count, laid out as a clean PDF, plus a layered lighting plan and quote if you want one. We will send it on WhatsApp in minutes.

Balanced 144 sq ft

Free. Our designers plan layered lighting with a locked quote, never spam.

01
01 / How it works

Three taps to a lighting plan.

01

Pick room and size

Choose your room, then enter the floor area or length and width. Feet or metres.

02

Choose brightness

Cosy, balanced or bright. We adjust the lux to match how you like it.

03

Get lumens and lights

Instant lumens needed and how many fixtures to fit, with approximate wattage.

02
02 / Lighting tips

Light it in layers.

Ambient layer

The base glow that fills the room: ceiling lights or panels. This is the layer the calculator sizes.

Task layer

Focused light where you work: kitchen counters, a study desk, a reading nook.

Accent layer

Cove lights, spots and lamps that add depth and highlight art or texture.

Warm vs cool

Warm 2700K relaxes living rooms and bedrooms; cooler 4000K and up sharpens kitchens and study.

Warm or cool light?

Warm light, around 2700K, feels relaxing and suits living rooms and bedrooms. Cooler light, 4000K and up, feels crisp and alert, better for kitchens, bathrooms and study areas. Most homes mix both, room by room.

Browse cost guides
03 / Want a lighting plan?

We can light it for you.

Our designers plan layered lighting, ambient, task and accent, with verified fixtures and a locked, itemised quote. The lumens above become a real plan, not guesswork.

Get a Free Quote
Verified fixtures

Genuine, graded LED panels, lamps and drivers, sourced and checked by us.

Locked, itemised quote

Fixtures, wiring and labour, each as its own line, fixed on approval.

Layered, on-time install

Ambient, task and accent lighting fitted by trained electricians, to a committed date.

04
04 / Related tools

Plan the rest, free.

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Restyle your room from a photo.

Home Interior Cost

Whole-home estimate by city.
05
05 / FAQ

Good questions.

How many lumens for a living room?
About 10 to 20 lumens per sq ft, so a 12 × 12 ft living room needs roughly 1,500 to 2,500 lumens, around 2 to 3 LED panels.
How do I calculate lighting for a room?
Multiply the area in square metres by the room’s recommended lux, then divide by the lumens per fixture. This calculator does it for you.
Warm or cool light?
Warm (2700K) for living rooms and bedrooms; cooler (4000K+) for kitchens, bathrooms and study areas.
Is it free?
Yes, free and no sign-up to start.
ready when you are

Light your home right

A free consultation, an itemised lighting plan, and a price that holds once you approve it.

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