4-step guide to choosing the right size for kitchen pendant lighting

You’ve found a pendant light that looks perfect for your kitchen, but then the technical questions start. Should you go for the 20cm or the 40cm version? Is two enough, or does the space need three?

Getting the scale wrong can make a beautiful island feel cramped or, conversely, make your lighting look like an afterthought. This guide simplifies the math behind the design, ensuring your kitchen island lighting is perfectly proportioned.

Step 1: Calculating the pendant diameter

The most common mistake is choosing a light that is too small for the scale of the island. To find the maximum allowable diameter for your pendants, use this simple calculation:

1. Measure the length and width of your kitchen island or breakfast bar in feet.
2. Subtract 12 inches from both measurements.
3. Add those two adjusted numbers together.
4. The final total is the approximate maximum diameter in inches for each pendant.

Example: For a 6ft x 3ft island:

• (6-1) + (3-1) = 7.
• Your ideal pendant diameter is roughly 7 inches.

Step 2: Determining the number of pendants

While the "rule of three" is a classic design principle, it isn't a law. The number of lights depends entirely on the length of your surface and the diameter of the fixtures you’ve chosen.

1. Measure the total length and width of your island in feet and add them together.
2. Subtract 12 inches from that total.
3. Divide this number by the width of your chosen pendant.
4. Divide the result by 2 to find the maximum number of pendants the space can comfortably hold.

Pro tip: If you are opting for a single linear pendant—like those from Aromas or Vibia—ensure the total length of the fixture does not exceed the length of the island. It should also sit high enough that it doesn't obstruct your line of sight when you're socialising across the counter.

Step 3: Spacing between pendant lights

To avoid a cluttered look, you need even "white space" between your fixtures.

1. Take the total length of your island or table.
2. Decide on your number of pendants and add 1 to that figure.
3. Divide the island length by this new number.
4. The result is the distance between the centre points of each light.

For an odd number of lights: Place the first one exactly at the centre point of the island and space the others out using your calculated distance. For an even number of lights: Find the centre of the island, then move half of your calculated distance to the left and right to place your first two pendants.

Step 4: Finding the perfect hanging height

The "golden rule" for hanging height is to place the lowest point of the fitting 30 to 36 inches (76 to 91cm) above the worktop.

However, this is where the human element comes in. We always recommend a "hold-and-see" test before the electrician clips the cables. Have someone hold the light at various heights while you stand back. You want to ensure the light is high enough to avoid glare but low enough to feel integrated with the island.

Final considerations

While these steps provide a professional framework, every home is unique. Factors like ceiling height and the "visual weight" of a lamp (a glass globe feels lighter than a solid brass dome) might mean you need to break the rules slightly.

If you are juggling a complex renovation, our Lighting Design Service can take the guesswork out of the process. We provide full layout drawings and lighting calculations to ensure your space is perfectly lit before you buy a single bulb.