Which Density Foam Is Good For A Sofa, 40 Or 50?

For most household sofas, 40-density foam is usually the more balanced choice, while 50-density foam is better suited for heavy-use environments.

A density of 40 kg/m³ offers a good balance of comfort, support, and durability, making it ideal for everyday living room use.

In contrast, 50-density foam provides firmer support and greater resistance to sagging, which is why it is often used in commercial settings or by heavier individuals.

However, foam density is not the same as firmness—higher density does not necessarily mean a harder feel. When choosing a sofa, it's also important to consider resilience and compression firmness, as these factors significantly affect overall comfort.