What shape of lampshade for a light fixture?

A lampshade can drastically change the appearance of a light fixture and the ambiance of an interior design, which is why it is important to choose it carefully.

To suit all tastes and complement different types of lighting, there's a plethora of lampshades to choose from. With a little help, you're sure to find the one you need!

To help you see more clearly, in this article we offer you an overview of the shapes, dimensions and characteristics you need to know to choose the right shape for your lampshade !

Prerequisites to know before choosing the shape of a lampshade

Before you ask yourself what shape of lampshade would suit you, you first need to know how to take the right measurements: to measure a lampshade, you calculate the diameter of the top, the bottom and its height. The dimensions of a lampshade are therefore as follows: Large Base (which corresponds to the diameter of the bottom) / Small Base (which corresponds to the diameter of the top) / Height. These dimensions are generally expressed in centimeters.

Knowing how to take and understand the measurements of a lampshade is important in determining the shape you need. To best suit your needs, it must take into account the proportions of the light fixture on which it will be placed.

This isn't a hard and fast rule, but it's generally recommended to stick to a ratio of 40% of the lamp's height to twice the diameter of the light fixture's base. This calculation will help you ensure the shade you choose will fit your lamp's base properly.

To give you a more precise idea, it is recommended to choose a lampshade whose height is not greater than that of the base. You will also need to take into account the type of lighting fixture (table lamp, floor lamp, with a thin or thick base, etc.) because this will impact the recommended dimensions, and consequently, the shape of lampshade you are likely to choose.

The recommended dimensions for a lampshade for a bedside lamp are 25 centimeters in diameter, while a diameter of around 45 centimeters is recommended for a floor lamp.

Lamps with thin bases will go perfectly with lampshades whose diameter is equal to their height, and lamps with more massive bases will require taking as a reference point the thickest point of their width, to which 5 centimeters will be added on each side to obtain the ideal diameter of the lampshade.

Another detail that can make a difference when choosing the shape is to check that the ring is compatible with the socket of your lamp: thus, the standard formats for screw-in bulb bases are the E14 (small base) and E27 (large base) types.

The numbers 14 and 27 correspond to the number of millimeters in diameter of the base. E27 bases are the most common, so you'll have more choices for lampshade shapes if you have a light fixture that accepts this type of bulb.

The nomenclature of lampshade shapes

Within the large family of lampshades, we find those called conical, “empire” lampshades, “drum” lampshades, and finally cylindrical models.

There are also other, more modern categories: oval, round, square, rectangular lampshades... This nomenclature is not fixed.

The choice between these different categories is above all a matter of individual preference, but depending on the lamp base that the lampshade will be used to adorn, some combinations are more successful than others.

Below you will find some information regarding each shape to help you make your choice.

Conical lampshades, the unbeatable classic

With Conical Lampshades , you're unlikely to go wrong, both in terms of aesthetics and proportionality with the height of the lamp base. Indeed, conical shapes are suitable for all heights of lamp base, and they never go out of style. From a functional point of view, this shape reflects light downwards, so it is mainly aimed at reading corners, when combined with a high base.

Please note that in general, it is advisable not to choose a conical lampshade whose width exceeds twice that of the base of the light fitting.

Also, the wider the lamp base, the larger the diameter of the bottom of the lampshade (large base) will need to be.

Spotlight on cylindrical lampshades

Cylindrical lampshades provide optimal lighting for a room, thanks to the wide opening of this type of lampshade model. If you want the light to diffuse over as much of an area as possible, for example in a living room or lounge, this is the shape for you!

For cylindrical lampshades, the bottom diameter should be smaller than that indicated for conical lampshades. This is because the large base of cylindrical lampshades has a larger diameter, making them inherently larger than the conical model.

Rectangular lampshades: the trendiest shape of the moment

Rectangular lampshades are a common type of light fixture. These lampshades have a straight, rectangular shape. They can create a clean, geometric look that fits well with modern or industrial design styles.

Rectangular lampshades are available in a wide range of sizes and styles. They can be made from a variety of materials and are attached to the lampshade frame. Depending on the size, these shades can accommodate two or more bulbs.

One of the advantages of rectangular lampshades is their versatility. They can be used in a variety of rooms, from formal living rooms to regular offices. Depending on the size and position of the lampshade, they can provide diffused lighting. They can also provide accent lighting.

Hanging white rectangular lampshades can help create a minimalist and modern space. Rectangular lampshades are an attractive option for adding light and elegance to a room.

Discover our entire collection rectangular lampshades by clicking here.

Drum and empire lampshades, ideal for enhancing an ordinary lamp

The drum and empire models are similar in that they pair well with the same type of lamp bases.

As for the so-called “drum” lampshades, they resemble the conical models (they are also sometimes called “American conical”), but the inclination of their surface is less marked than that of the conical lampshades, they are slightly straighter. They are suitable for emphasizing the beauty of simple and modern bases.

Empire lampshades have a large base with a larger diameter than the smaller base. Empire lampshades are slightly flattened, with a curve that highlights the straight lamp bases and corrects their severity with a bit of romanticism.

Similar to cylindrical lampshades, drum and empire lampshades have a wider opening at the top than conical models. Here too, it is recommended to choose a smaller diameter for the large base than would be the case for a conical lampshade.

Square Lampshades: For lamp bases with a square base

In interior design, the shape of a square can convey different meanings depending on the context. For example, a square can symbolize stability and permanence because it has clear boundaries and straight lines. It can also symbolize symmetry and balance because its sides are equal, and is often used in geometry and architecture. Furthermore, the square shape can evoke a sense of order and cleanliness.

In general, the interpretation of the square shape in interior design can vary, but it is often associated with these qualities.

Discover our entire collection of Square Lampshades by clicking here.

Square lampshades are a popular choice for desk lamps in the office and for office interiors. These lampshades have a straight, square shape and can create a clean, geometric look that lends itself well to an understated design. The clean lines and geometric shapes of these lampshades can create a modern, minimalist look. When paired with other design elements, a more complex and layered aesthetic can be created.

A black square lampshade for a table lamp can be a bold solution for those who aren't afraid to experiment. Show your individuality by choosing a lampshade.

Clip-on lampshades: a simple and effective solution

Explore our Clip-on Lampshade Collection by following this link.

THE Clip-on lampshades , also called "flame clips", are particularly practical thanks to their simple attachment system. They clip directly onto the bulb, eliminating the need for any additional support. This type of lampshade is ideal for small luminaires , such as bedside lamps, wall lights or even the chandeliers with multiple bulbs. Their ease of installation and versatility make them a popular option for spaces requiring elegant and discreet accent lighting.

Tube lampshade

Tubular lampshades are a type of cylindrical lampshade, narrow and elongated in shape, resembling a tube or cylinder. Thanks to their shape, they can also visually elongate the space, giving it a sense of upward movement.

Note: Explore our Tube Lampshade Collection by following this link.

Other categories of lampshades

We can also find more atypical shapes among lampshades, notably round models, which are often imposing and bold; oval lampshades, which are popular for bedside lamps; pagoda lampshades; etc.

What these original shapes have in common is that they instantly add a touch of modernity to your decor. They're therefore recommended if you're looking to give your interior a strong personality. The downside is that they're not versatile, so you need to use them sparingly and keep in mind the harmony of the entire room!

Other criteria that can influence the choice of the shape of a lampshade

A lampshade is not just an aesthetic object: it has above all a practical function, that of directing light to a specific area or diffusing it in a particular way, for greater eye comfort.

Therefore, the wider a lampshade is, the more light it will diffuse; depending on whether it is small, conical, cylindrical, oval, square... it will not be suitable for the same function. Appearance is an important criterion, but do not forget to remember what function the light fixture on which your lampshade will be placed is intended for: you do not choose the same shape of lampshade for reading, working, cooking, or inspiring a relaxing atmosphere. The shape of a lampshade is therefore not insignificant: it can change the purpose of a lamp completely!

In conclusion, to choose your lampshade well, you will first need to listen to your desires: keep our recommendations in mind, but don't forget to treat yourself when purchasing your lampshade. The most important thing is that you are satisfied with your choice and that this new accessory naturally finds its place in your interior, to enhance your decoration and make you feel good in your home! We hope that the advice mentioned in this article will have helped you choose the shape of your next lampshade. Don't hesitate to share your questions with us, we will be happy to give you our expert opinion! See you soon on Chamade for more information on lampshades!