Too few downlights leave dark corners and shadows across the worktop. Too many make the ceiling look like a runway. If you are asking how many downlights do I need, the honest answer depends on the size of the room, the brightness of each fitting and where you prepare food. This guide gives you a simple formula, a size-by-size table and the spacing rules UK electricians work to.
The Quick Answer
For most UK kitchens with a standard 2.4m ceiling, plan on one downlight for roughly every 1.2 to 1.5 square metres of floor space, spaced around 1.2m apart. A typical 3m by 4m kitchen needs about 8 to 10 downlights before you add lights under the wall units or over an island. That is the short answer to how many downlights in a kitchen.
How to Work Out the Number
For a more accurate figure, you only need three numbers. Think of it as a downlight calculator you can run on your phone:
- Measure the floor area. Multiply the length of the kitchen by the width to get square metres (m²).
- Choose a target brightness. For general kitchen lighting, aim for about 300 to 400 lumens per m². Worktops where you chop and cook benefit from around 500.
- Check the lumens of one downlight. Many 5W to 8W LED downlights give roughly 400 to 700 lumens.
- Divide. Multiply the floor area by your target lumens, then divide by the lumens of one fitting.
For example, a 3m by 4m kitchen is 12m². At 350 lumens per m² you need about 4,200 lumens in total. With 500 lumen downlights, that is 8.4, so round to 8 or 9 and arrange them evenly. This method answers how many downlights per m² better than any fixed rule, because it allows for how bright your chosen fittings actually are. If your cabinets or worktops are dark, add 10 to 20 percent, as darker finishes absorb more light.
Downlights by Kitchen Size
The table below assumes a 2.4m ceiling and downlights of about 500 lumens each. It covers ceiling downlights only, so under-cabinet and island lighting come on top.
| Kitchen | Typical size | Floor area | Ceiling downlights |
|---|---|---|---|
| Small galley | 2m x 3m | 6m² | 4 to 5 |
| Medium kitchen | 3m x 4m | 12m² | 8 to 10 |
| Large kitchen | 4m x 5m | 20m² | 13 to 16 |
| Open-plan kitchen diner | 5m x 6m | 30m² | 20 to 24, split into zones |
With higher ceilings, you can space lights a little further apart and use a narrower beam.
Downlight Spacing and Distance From the Wall
Good downlight spacing matters as much as the number. So how far apart should downlights be? On a standard 2.4m ceiling, around 1.2m apart gives even light without dark patches. Fittings with a wide 60° beam can stretch to about 1.5m, while narrow beams need to sit closer together.
As a general guide, the gap between a downlight and the wall is about half the gap between lights, so roughly 600mm. Kitchens need a little more thought. If you are wondering how far should downlights be from the wall in a kitchen, place the line of lights over the front edge of the worktop, about 600 to 750mm out from the wall. Too close to the wall and you stand in your own shadow.
Planning Your Kitchen Downlight Layout
A good kitchen downlight layout follows the shape of the kitchen rather than a perfect grid:
- Start with the work runs. Put a line of downlights over each run of base units, about 600 to 750mm from the wall.
- Light the walkway. In larger rooms, add a second line or a few lights down the centre.
- Line up with the units. Centre lights over the sink, the hob and runs of cabinets, not just the middle of the room.
- Check the joists. A light may need to move by 100mm or so to clear a joist.
In the UK, people use the words spotlight and downlight for the same kind of fitting, so these rules also answer how many spotlights in a kitchen.
Lumens, Beam Angle and Colour
For how many lumens for a kitchen, the 300 to 400 lumens per m² guide above is a good starting point, rising to around 500 over the worktops.
The best beam angle for downlights in a kitchen is usually 60° or wider for general lighting, because it overlaps neatly and avoids bright pools on the floor. Narrower beams of 36° to 40° suit higher ceilings, islands and feature areas.
Colour matters too. Most kitchens work well between 3000K and 4000K, and it is best not to mix colour temperatures in one room. Our guide to warm white vs cool white kitchen lighting explains how to choose. For flexible kitchen downlights, our LED dimmable downlight switches between 5W and 8W and between 2700K, 3000K, 4000K and 6000K. It needs a 65mm cut-out, is rated IP65 and is approved to be covered by insulation.
Lighting Under the Wall Units
Ceiling lights sit behind you, so your body shades the worktop. Lights under the wall units fix this. If you are asking how many under cabinet lights do I need, allow one light every 300 to 400mm along the underside of the wall units. That means two on a 600mm wall unit and one on a 300mm or 400mm unit, or roughly 8 to 10 along a 3m run. Fit them near the front edge of the cabinet so the light lands on the worktop, not the splashback.
Compact surface mounted downlights are the simplest choice, because they need no cut-out in the cabinet base. Our UFO LED downlight is a 3W, 66mm dimmable light with an optional motion sensor. It runs at 12V, so it needs a driver, and our LED driver wattage guide shows how to size one. The Triangle LED downlight is a 2W mains (230V) fitting available in 2700K, 4100K or 6400K. To finish the scheme at floor level, see our guide to plinth lights, downlights and pop-up sockets.
Lighting a Kitchen Island
Most islands suit two or three pendants, spaced about 600 to 750mm apart, or two to four downlights in a line. As for how high should kitchen island lights be, hang pendants so the bottom sits 750 to 900mm above the worktop. This lights the surface while keeping sight lines clear.
Zones, Dimming and Safety
Put the worktop lights, island, dining area and plinth lights on separate switches or zones. You can then use bright light for cooking and soft, dimmed light in the evening. Check that dimmable fittings work with your dimmer switch.
If there is a room or loft above the ceiling, ask your electrician whether fire-rated downlights are needed. Any new lighting circuit should be installed by a qualified electrician, who can confirm the work meets Building Regulations.
Plan Your Kitchen Lighting with Aspin Collins
Aspin Collins stocks ceiling downlights, under-cabinet lights, plinth lights, drivers and accessories in our Lighting and Electrics range. For help planning lighting for a new kitchen, call us on 0161 465 4007 or contact us.
Frequently Asked Questions
1. How far apart should downlights be in a kitchen?
On a standard 2.4m ceiling, space kitchen downlights about 1.2m apart. Fittings with a wide 60° beam can stretch to around 1.5m, while narrow beams or dark finishes need the lights a little closer together.
2. How far should downlights be from the wall?
In a kitchen, about 600 to 750mm from the wall, so each light sits over the front edge of the worktop. In other rooms, half the spacing between the lights is a good guide.
3. How many downlights per m2 do I need?
Roughly one downlight for every 1.2 to 1.5 square metres, assuming fittings of about 500 lumens. Brighter fittings mean you need fewer lights, while dark cabinets or worktops may need a few more.
4. What is the best beam angle for kitchen downlights?
A beam angle of 60° or wider gives even general light on a standard ceiling. Narrower beams of 36° to 40° suit higher ceilings, islands and feature areas where you want more focused light.
5. How many lights should go over a kitchen island?
Most islands suit two or three pendants spaced about 600 to 750mm apart, or a row of two to four downlights. Hang pendants so the bottom sits 750 to 900mm above the worktop.
6. Do kitchen downlights need to be fire rated?
If there is a room or loft above the ceiling, fire-rated downlights help keep the ceiling's fire resistance. Ask your electrician, who will also check insulation and any IP rating needed near steam.
