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Downlights: How to Choose the Right Number in 2024 (Ultimate Guide)

Downlights: How to Choose the Right Number in 2024 (Ultimate Guide)-About lighting--4ff74179 8b78 4b95 8d77 59058466e841

To choose the correct number of LED downlights, consider room size, ceiling height, light output (lumens) of each downlight, and desired brightness. Use a light calculator or consult a lighting standard guideline like LM-79 for accurate placement and quantity.

Choosing the right number of LED downlights is crucial for any space’s ambiance and functionality. This insightful article delves into the common issues of room illumination, addressing the challenge of balancing light distribution and intensity. It highlights the benefits of proper lighting in enhancing mood and productivity, offering a step-by-step guide to planning, finding focal points, and understanding the technicalities of downlights. Get ready to transform your spaces with the optimal lighting setup, ensuring both comfort and efficiency.

Make A Plan

Planning is essential when it comes to lighting your room. As the saying goes, “if you fail to plan, you plan to fail”. You don’t need anything fancy – just a sketch book and a pencil. Draw a rough map of your room and mark where you want your lights to be. This will save you a lot of time and hassle later on.

Make sure you include your furniture in your sketch, because it affects how the light is distributed in the space. For example, you might want to avoid placing a lamp behind a tall bookcase, or use a dimmer switch for a light near a TV screen.

Did you know that lighting can also influence your mood, productivity, and health? According to some studies, natural light can boost your energy, creativity, and happiness, while artificial light can disrupt your sleep, circadian rhythm, and hormones. That’s why it’s important to balance different types of lighting in your room, such as ambient, task, and accent lighting.

It explains the basic principles of lighting design, and gives you some tips, ideas, and examples on how to light up any space like a pro.

Find Your Focal Points

Do you want to make your rooms more attractive and comfortable with downlights? Downlights are a great way to create a cosy and relaxing atmosphere, as well as highlighting the features you want to show off. But how do you choose the right downlights for your space? Here are some tips to help you out.

First, think about what you want to focus on in each room. For example, in a bathroom, you might want to have more light above the sink where you need to see clearly. Or in a living room, you might have a favourite chair where you like to read or watch TV. These are the areas where you should place your downlights first, and then arrange the rest around them.

Second, consider how much light you need for different activities and moods. You don’t want to have too much or too little light, as that can affect your eyesight and your wellbeing. The table below shows some recommended levels of illumination in lumens per square metre for various tasks and settings. Lumens are a measure of how bright a light source is, and you can find them on the labels of most light bulbs.

ActivityIllumination in Lumens/m2
Public areas with dark surroundings20-50
Simple orientation for short visits50-100
Working areas where visual tasks are occasionally performed100-150
Warehouses, homes, theatres and archives150
Easy office work and classes250
Normal office work, PC work, library study, groceries, showrooms and laboratories500
Supermarkets, mechanical workshops, office landscapes750
Normal drawing work, detailed mechanical workshops, operation theatres1000
Detailed drawing work and very detailed mechanical work1500-2000
Performance of visual tasks of low contrast and very small size for prolonged periods of time2000-5000
Performance of very prolonged and exacting visual tasks5000-10,000
Performance of very special visual tasks of extremely low contrast and small size

As you can see, the amount of light you need depends on what you are doing and how much detail you need to see. For example, if you are working on a complex drawing or a delicate surgery, you need a lot more light than if you are just relaxing or having a chat. You can also adjust the light level according to the time of day, the season, and your personal preference.

Third, choose the right type and style of downlights for your rooms. There are many options available, such as LED downlights, recessed downlights, exposed downlights, and round downlights. Each one has its own advantages and disadvantages, depending on the size, shape, and design of your space. You can also choose different colours, temperatures, and dimmers to create different effects and moods.

Follow The Ceiling Height Rule Of Thumb

Downlights are a great way to add light and style to your rooms, but you need to make sure you install them correctly to avoid any problems. One of the most important things to consider is how far apart you should place them from each other.

A general rule of thumb for spacing your downlights is to take the height of your ceiling and divide by 2. For example, if your ceiling is 8 feet high, then your downlights should be around 4 feet apart from each other. This will give you a good balance between coverage and brightness.

However, this rule is not set in stone and you may need to adjust it depending on various factors, such as:

  • The size and shape of your room
  • The number and type of downlights you use
  • The purpose and mood of your lighting
  • The personal preference and taste of yourself

For instance, if you have a large or irregularly shaped room, you may want to space your downlights closer together or further apart based on how light or dark you want it to be. You may also want to create different zones or areas with different levels of brightness by using dimmers or colour-changing bulbs.

Similarly, if you use different kinds of downlights, such as recessed, pendant, spot or wall-mounted ones, you may need to consider their specifications and compatibility when spacing them out. For example, some downlights may have a lower wattage or voltage than others, which means they can be spaced farther apart without overheating or flickering.

Another factor that can affect the spacing of your downlights is the purpose and mood of your lighting. For example, if you want a bright and cheerful atmosphere in your kitchen or living room, you may want to use more downlights than if you want a cozy and intimate ambiance in your bedroom or bathroom.

Finally, the most important thing is that you like how it looks and feels in your room. You should always remember that it is better to ‘overlight’ your room than risk not having enough light. Using a dimmer switch will then allow you to adjust the brightness level according to your needs.

Keep Your Distance

are you thinking of installing downlights in your home? Downlights are recessed lighting features that can brighten up your space without being too glaring. But do you know how to position them properly to avoid unwanted shadows and make your room look bigger? Let me give you some tips.

First of all, you need to leave a gap of about 90 cm (or 3 feet) between the edge of your ceiling and your downlights. This is because if your downlights are too close to the wall, they will cast dark patches on the wall, which can make your room look smaller and less inviting. By leaving some space, you allow the light to bounce off the wall and create a more spacious and airy feeling.

Secondly, you need to space your downlights evenly across the ceiling, about 120 to 150 cm (or 4 to 5 feet) apart from each other. This will ensure that you get a balanced and even lighting in your room, without any dark spots or glare. You also need to avoid placing your downlights near furniture, curtains, or other flammable items, as they can get very hot and pose a fire risk.

Thirdly, you need to choose the right type of downlights for your ceiling. There are different types of downlights that operate at different voltages and have different fire ratings. You need to check the product packaging and the manufacturer’s instructions for the correct specifications and installation methods. You also need to use the right type of lamps for your downlights, as some lamps can reflect heat in the wrong direction and cause overheating. If you are not sure, you can always consult a registered electrician for advice.

How Does Kosoom Go Above and Beyond Other Brands to Better Help You With Any Question or Problem You Have About LED Lights for “How To Choose The Correct Number Of LED Downlights”

Kosoom, an Italian lighting brand, distinguishes itself in the commercial lighting sector with its comprehensive approach to customer service and product excellence, particularly in the realm of LED downlights. Here’s how Kosoom excels:

  1. Deep Understanding of Lighting Needs: Kosoom’s extensive experience in lighting solutions equips them to provide tailored advice for choosing the correct number of LED downlights. They offer guidance on planning room lighting, emphasizing the importance of considering room layout and furniture placement to ensure optimal light distribution​​.
  2. Focus on Functional and Aesthetic Value: Kosoom’s expertise extends to helping customers identify focal points in each room, ensuring downlights enhance both functionality and aesthetics. They advise on placing downlights strategically to highlight specific areas or features, catering to different activities and moods​​.
  3. Technical Guidance and Support: Understanding the technicalities of lighting installation is crucial, and Kosoom excels in offering advice on spacing downlights according to ceiling height and room dimensions. They provide a general rule of thumb while also considering room size, shape, lighting purpose, and personal preferences​​.
  4. Safety and Efficiency Considerations: Kosoom advises on maintaining a safe distance between downlights and other objects to prevent shadows and overheating. They also guide on choosing the right type of downlights and lamps for different ceilings, factoring in fire ratings and voltage requirements​​.
  5. Cost-Effectiveness and Quality Assurance: Kosoom’s robust supply chain allows them to offer high-quality LED downlights at competitive prices by using Kosoom “DirectLightSaver Hub” System. Their direct shipment from Italian warehouses ensures prompt delivery, and their products meet stringent European standards, with certifications like CE and ROHS.
  6. Extensive Research and Development: With over 1000 employees, including a large R&D team, Kosoom continuously invests in technological advancements and talent development in the lighting field. This commitment to innovation ensures their products are at the forefront of efficiency and design.
  7. Comprehensive Customer Support: Kosoom’s blend of online and offline presence, including physical stores across Europe and multiple official websites, facilitates direct and versatile customer service. This strategic approach ensures that customers receive prompt and efficient assistance for any queries or issues related to LED downlights.

Shop Kosoom Cheap LED Lights – The lowest price in the world


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Now that you’ve grasped the essentials of selecting the right LED downlights, it’s time to illuminate your space efficiently! We invite you to share your experiences and thoughts in the comments below. Your insights enrich our community and help others make informed decisions. If you found this article helpful, please share it on social media. And, if you have any questions or suggestions for topics you’d like to see covered, let us know. Your input helps us light up the path to better lighting solutions for everyone​​.


How many LED downlights per room calculator?

To calculate the number of LED downlights needed per room, you’ll need to consider various factors such as the room size, ceiling height, the purpose of the room, and the type of LED downlight you’re using. The table below provides a general guide based on common room sizes and desired brightness levels.

Keep in mind that the lumen output (brightness) of different LED downlights can vary, so you’ll need to adjust the number based on the specific downlights you plan to use and the ambient light in the room. Consulting with a lighting professional or using a detailed lighting calculator can provide more accurate guidance.

Room TypeSize (in sqm)Lux Level (Brightness)Downlights Needed (approx.)
Living Room20150-2004-6


  • Size (in sqm): Measure your room area in square meters to match the table.
  • Lux Level: Desired brightness in Lux (Lumens per square meter). Living rooms generally require 150-200 Lux, kitchens 200-300 Lux, etc.
  • Downlights Needed: The approximate number of downlights based on the average room size and desired Lux. Adjust accordingly for your specific situation.
How do I calculate how many LED downlights I need?

Calculate the number needed by considering the room’s square footage and the lumens per downlight. A typical formula is room area (in square meters) times desired lux level (lighting per square meter) divided by the lumen output of the downlight.

How many downlights should I put?

The number of downlights depends on room size and function. A living room might need more for ambiance, while a kitchen needs focused task lighting. Start with one downlight every 1.5 to 2 meters and adjust based on specific needs and aesthetics.

How do I choose the right downlights?

Choose the right downlights by considering brightness (lumens), color temperature (warm or cool), beam angle, and energy efficiency. Ensure they suit the room’s decor and lighting requirements, and check if they’re dimmable if needed.

How many LED downlights do I need in a kitchen?

An average-sized kitchen typically needs about 4-6 LED downlights, focusing on areas over countertops and islands for task lighting. The exact number may vary based on kitchen layout and personal preference for brightness.

How many LED can lights per room?

The number of LED can lights per room varies; a standard recommendation is one light for every 4 to 6 square meters of ceiling space. Adjust the number based on room size, ceiling height, and desired light intensity for balanced illumination.

More article about downlights


About Gilbert

Our email: [email protected] Dear readers of Kosoom.uk! I am delighted to introduce myself as Gilbert, your dedicated source of enlightenment when it comes to LED lights. If you have questions about any LED lights, please feel free to contact us to our email: [email protected] We will give you a satisfactory answer as soon as possible. Hailing from the heart of England, I bring to you a wealth of professional expertise and a passion for all things LED. As an Englishman with a fervent interest in illumination technology, I have made it my mission to illuminate the path to understanding LED lights, tailored especially for the inquisitive minds of Britain. With a background steeped in the intricacies of LED technology, I stand ready to shed light on every facet of this brilliant innovation. Through my articles, I intend to guide you through the captivating world of LED lights, providing you with insights that not only unravel the science behind these luminous marvels but also highlight their practical applications and benefits in the UK context. In collaboration with Kosoom, I embark on this journey to demystify LED lights for you. Whether you're curious about the evolution of LED technology, eager to decipher the nuances of LED color temperatures, or seeking advice on optimizing lighting choices for your home, workplace, or public spaces, I am your trusted companion. My articles will offer you clear, concise, and expertly-crafted explanations that bridge the gap between complex technical jargon and approachable, relatable understanding. Stay tuned for a series of articles that will not only elevate your understanding but also brighten up your perspectives on the art and science of lighting.

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