Some sofas or wardrobes can appear to be ideally sized in the store but prove to be too big for your home. Knowing how to measure a room for furniture can help you avoid these situations. First, take a look at how long and how wide the room is, and then measure the doors, windows and walking space available in the room. Furniture height and depth are also important to consider when buying furniture. These measurements will make it easier for you to buy furniture and install it in a room.