How roomy is an assembled sofa bed on average?

An assembled sofa bed, such as those from Koala, IKEA, or Freedom, typically offers sleeping space similar to a standard single, double, or queen mattress, with a width ranging from about 90 cm to 153 cm; length around 193 to 203 cm.

Dimensions for sofa beds vary, with most models designed to transition from compact seating to beds that accommodate standard Australian mattress sizes.

For instance, contemporary furniture brands like Koala, IKEA and Freedom offer sofa beds with sleeping surfaces generally ranging from single (about 91 cm wide) to queen size (153 cm wide), and an extended length of around 193–203 cm.

When fully assembled, a sofa bed provides roominess similar to a traditional bed and flexibility to function as everyday seating.