When designing or selecting an outdoor sofa, one of the most critical factors to consider is seat height. The ideal seat height ensures accessibility, comfort, and usability for all users, whether relaxing alone or entertaining guests.

For optimal accessibility, the standard seat height for an outdoor sofa typically ranges between 16 to 18 inches (40 to 45 cm). This range accommodates most adults, allowing them to sit down and stand up comfortably without straining their knees or hips. A height within this range also ensures that feet rest flat on the ground, promoting proper posture and reducing discomfort during prolonged sitting.

However, accessibility needs can vary. For elderly individuals or those with mobility challenges, a slightly higher seat—around 18 to 20 inches (45 to 50 cm)—may be preferable, as it requires less effort to rise from a seated position. Conversely, lower seating (14–16 inches) can create a more relaxed, lounge-like feel but may be less accessible for some users.

Material and cushion thickness also play a role. A thick cushion can compress under weight, effectively lowering the seat height. To maintain consistency, measure the height from the ground to the top of the seat cushion when compressed.

Ultimately, the ideal seat height balances ergonomics, aesthetics, and user needs. Test different heights to find the perfect fit for your outdoor space, ensuring comfort and accessibility for everyone.