When measuring a sectional, there are two sectional sofa dimensions you should primarily focus on: overall width and overall length. Use a tape measure to measure the overall width and overall length in inches. You should also use a tape measure to measure and make note of the height of the sectional sofa from the floor to the arms as well as from the floor to the sofa back.

Measuring a curved sectional is a little more difficult than measuring a traditional sectional. We suggest using masking tape or painter’s tape to tape a rectangular area around the curved sectional so that no part of the sectional sofa is protruding. Once you’ve created a comfortable rectangle to fit the curved sectional, use a tape measure to measure the length and width of that rectangle. These dimensions should serve as the dimensions of an area that would comfortably fit that sectional.

Because sectional sofas are highly customizable, there are no standard sectional dimensions.

Overall Length: This is the combined measurement of both the right-hand (or left-hand) loveseat and the corner chair. The overall length of a sectional sofa is usually between 94” and 156” (or between about 8’ and 13’) long.

Overall Width: This is the total measurement of all the components along the back of the sofa. In the illustration, the components are the left-hand chaise, the armless loveseat in the middle, and the corner chair on the right side. The overall width of a sectional sofa is usually longer than the overall length and tends to fall between 94” and 168” wide.

Other Measurements: When measuring a sectional, the measurements on the interior sides of the sectional as shown in the illustration are important if you’re considering pairing your sectional with a coffee table or other living room centerpiece, like an ottoman.

Curved Sectional Measurements: Measurements for curved sectionals, found under the “Weights & Specifications” section of their product descriptions, are listed for height, width, and depth. The best way to describe these width and depth measurements is that they correspond to the size of the smallest imaginary rectangle that could fit the curved sectional within it. The width is the measurement of the long side of the rectangle and the depth describes the short side. When measuring your space for a curved sectional, use the dimensions of this imaginary rectangle as you would the dimensions of a traditional sectional.

How to Measure for a Sectional Sofa

1. Measure Your Space

To measure your living room or space for a sectional sofa, use a tape measure to measure the length, width, and height of the room. These measurements will be a baseline for what size sectional will comfortably fit in your space. You may use a measure app or AR ruler app in place of a tape measure to take your measurements, but we recommend using a tape measure for the most accurate measurement possible.

It’s also important to measure doorways, hallways, and other areas through which the sofa must be carried when it is delivered. Sometimes a sectional’s legs can be removed so it can squeeze through narrow spaces, but it’s still good practice to avoid buying a sectional that may not fit through your front door.

2. Tape the Area

Once you know how large your room is, choose the spot you’d like to place your sectional. It should be wide open and away from high-traffic pathways so the sectional doesn’t obstruct the natural flow of movement throughout your home. A corner sectional can be appropriately placed in one corner of your living area, but be sure to leave a few inches for outlet access if necessary.

Mark the spot you picked out on the floor with masking tape or painter’s tape. Exact measurements don’t matter here – taping off the space will help you visualize how much space the sofa will occupy in the room. You can remove and re-mark as many times as you need until you’re sure you have a comfortable size and position.

3. Measure the Area

Measure the dimensions of the area you’ve marked. Though it’s unlikely you’ll find a sectional that will perfectly match those measurements, you can use them as an estimate or set of general guidelines for the sectional size that is best for your room.

If you’re considering placing the sofa in front of windows, make sure to measure the height of the window sill. The rule of thumb is that the sofa back should not extend higher than the sill.