Choosing the right mattress for your IKEA Hemnes daybed is the critical final step in creating a versatile and comfortable furniture piece. While the daybed frame provides the structure, the mattress defines the comfort, support, and overall functionality of the space. Understanding the precise dimensions is essential to ensure a perfect fit, prevent unsightly gaps, and maintain the structural integrity of the frame.
The IKEA Hemnes daybed is a popular choice for bedrooms and living rooms due to its classic Swedish design and practical dual functionality. It serves as a comfortable seating area during the day and transforms into a cozy sleeping space at night. To maximize its potential, you must match the mattress dimensions exactly to the frame specifications, taking into account the specific nuances of the model.
Standard Hemnes Daybed Mattress Dimensions
The most common Hemnes daybed configuration follows a specific standard measurement that applies to the majority of standard-height models. For a seamless fit, the mattress must align perfectly with the internal frame dimensions.

| Dimension | Measurement (inches) | Measurement (centimeters) |
|---|---|---|
| Width | 39" | 99 cm |
| Length | 75" | 190 cm |
| Height/Depth | 5" | 12 cm |
This 39" x 75" dimension is the industry standard for twin-sized mattresses and is designed to fit precisely within the Hemnes frame. Choosing a mattress with these exact specifications ensures there is no slippage or misalignment, providing a stable and secure sleeping surface.
Mattress Thickness Considerations
While the length and width are critical for fitting within the frame, the thickness of the mattress plays a significant role in comfort and usability. The standard recommended depth is 5 inches, which provides ample support without compromising the safety of the raised daybed structure.
- Under 5 inches: Mattresses thinner than 5 inches may cause a person to roll off the side of the bed, as the sleeper's center of gravity is closer to the floor.
- Over 5 inches: Mattresses thicker than 5 inches risk creating a gap between the mattress top and the surrounding frame. This gap can be a hazard, potentially trapping limbs or creating an uncomfortable sleeping surface.
High-Profile Variations: Queen Size Mattresses
Some users prefer a higher sleeping surface, which leads them to consider using a standard queen-sized mattress on their Hemnes daybed. However, this requires careful verification of the specific frame model, as not all Hemnes daybeds accommodate the larger size.

Certain Hemnes daybeds are specifically designed with a higher frame to fit queen-sized mattresses. If you are attempting this configuration, the dimensions you are aiming for are 60" in width and 80" in length. Always consult the specific product documentation for your daybed model to confirm structural compatibility before purchasing a mattress of this size.
The Importance of Exact Fitting
An improper fit between the mattress and the daybed frame can lead to several issues that impact both safety and aesthetics. A mattress that is too small will slide around, creating instability and making it difficult to get in and out of bed safely.
Conversely, a mattress that is too large will not fit into the frame correctly, causing bulging corners that damage the structure. Furthermore, gaps between the mattress and the headboard or side rails can collect dust and dirt, and pose a safety risk for children or pets who might become trapped.

Additional Specifications for Comfort
Beyond the physical dimensions, the material and firmness of the mattress will dictate the daily comfort of the user. Memory foam or hybrid mattresses are excellent choices for daybeds as they contour to the body while providing the necessary support to prevent sagging over time.
When selecting your mattress, prioritize a medium-firm feel to ensure the back is properly supported during both sitting and sleeping. Pairing the correct dimensions with the right comfort level transforms the Hemnes daybed from a simple piece of furniture into a long-lasting investment in your home and well-being.



















