Sofa Length: Though sofas can be anywhere between 70" and 96" long, standard three-person sofas tend to be between 70" and 87" long, and the most common length is 84".
What is the average sofa length?
Usually, a standard sofa will have three seat cushions and an average of about 86 inches in length. If you plan to have a coffee table in front of your sofa, make sure to allow yourself 12 to 18 inches in between for plenty of legroom.
What is standard size of sofa?
What are standard sofa dimensions? The standard three-seat sofa is about 84” (152cm) wide, 40” (102cm) deep, and about 33” (84cm) tall. Loveseats, on the other hand, tend to be even smaller, at 52” (130cm) wide and 33” (84cm) deep, with a height that's about equal at 33” (84cm).