The IKEA Billy bookcase is a timeless and versatile furniture piece that has been a staple in homes worldwide since its introduction in 1979. Its modular design allows for endless configuration possibilities, making it a popular choice for various spaces, from living rooms and bedrooms to home offices and kids' rooms. But before you start planning your Billy bookcase layout, it's crucial to understand its measurements to ensure it fits perfectly in your space. Let's delve into the dimensions of the IKEA Billy bookcase and explore its various configurations.

IKEA Billy Bookcase Sizes

The IKEA Billy bookcase comes in three standard heights and two depths, allowing you to choose the perfect size for your needs. Here are the dimensions of each Billy bookcase size:
| Size | Height (cm/inches) | Width (cm/inches) | Depth (cm/inches) |
|---|---|---|---|
| Billy Bookcase - Short | 75/29.5 | 38/14.96 | 20/7.87 |
| Billy Bookcase - Medium | 125/49.21 | 38/14.96 | 20/7.87 |
| Billy Bookcase - Tall | 200/78.74 | 38/14.96 | 20/7.87 |

Additionally, you can purchase Billy bookcase extensions to create even taller units, with the tallest configuration reaching up to 210 cm (82.68 inches).
Billy Bookcase Depth and Width

The Billy bookcase's depth and width remain consistent across all sizes, making it easy to create uniform-looking configurations. The standard depth of 20 cm (7.87 inches) is perfect for storing books, decorative items, and even small electronics. The width of 38 cm (14.96 inches) allows for ample storage space while keeping the bookcase from feeling too bulky.
Billy Bookcase Height Options
The Billy bookcase's height is what truly sets it apart, with three standard sizes to choose from. The short Billy bookcase is an excellent choice for smaller spaces or when you want to create a low, horizontal layout. The medium and tall Billy bookcases are perfect for maximizing vertical space and creating a striking visual impact.

Short Billy Bookcase
The short Billy bookcase, with a height of 75 cm (29.5 inches), is ideal for placing under a desk, in a kid's room, or in a small apartment. It's also a great option for creating a low, horizontal layout when combined with other Billy bookcases.
Medium Billy Bookcase

The medium Billy bookcase, standing at 125 cm (49.21 inches), is a versatile size that works well in most spaces. It's perfect for creating a balanced layout in a living room, bedroom, or home office. You can also combine two medium Billy bookcases to create a tall unit.
Tall Billy Bookcase




















The tall Billy bookcase, with a height of 200 cm (78.74 inches), is an excellent choice for maximizing vertical space in your room. It's perfect for creating a floor-to-ceiling bookshelf or combining with other Billy bookcases to create a custom layout. Keep in mind that the tall Billy bookcase may require additional support, such as wall mounting or a support bracket, to ensure stability.
Billy Bookcase Configurations
One of the most appealing aspects of the IKEA Billy bookcase is its modular design, which allows for endless configuration possibilities. You can create horizontal or vertical layouts, combine different sizes, and even add doors or drawers to create a custom look. Here are some popular Billy bookcase configurations to inspire your own design:
- Horizontal Layout: Combine short and medium Billy bookcases to create a low, horizontal layout. This configuration is perfect for placing under a desk or creating a low, built-in look.
- Vertical Layout: Stack tall Billy bookcases on top of each other to create a floor-to-ceiling bookshelf. You can also combine medium and tall Billy bookcases to create a custom height.
- Billy Bookcase with Doors: Add Billy bookcase doors to create a more streamlined look and hide clutter. You can also add Billy bookcase drawers to create additional storage space.
- Billy Bookcase with Desk: Combine a Billy bookcase with a desk to create a functional home office or study space. You can also add a Billy bookcase with doors and drawers to create a built-in look.
When planning your Billy bookcase configuration, be sure to consider the overall dimensions of the layout, as well as the weight it will hold. It's essential to ensure that your Billy bookcase is stable and secure, especially if you're creating a tall or heavy configuration.
In summary, the IKEA Billy bookcase is a versatile and customizable furniture piece that can be adapted to fit various spaces and storage needs. By understanding the dimensions and configuration possibilities of the Billy bookcase, you can create a functional and stylish storage solution that perfectly suits your home. Happy designing!