The short answer: a standard three-seat sofa is about 84 inches wide (most fall between 72″ and 96″), 32-40 inches deep and 30-36 inches high, with a seat about 17-19 inches off the floor. Loveseats, sectionals and deep-seated cloud couches are sized differently, as the tables below show.
Sofa size chart: standard dimensions by type
| Type | Typical width | Typical depth | Seats |
|---|---|---|---|
| Loveseat | 52-72″ | 30-38″ | 2 |
| Apartment-size sofa | 68-80″ | 30-36″ | 2-3 |
| Standard 3-seat sofa | 72-96″ (about 84″ is most common) | 32-40″ | 3 |
| Extra-long or 4-seat sofa | 96-110″+ | 34-42″ | 4 |
| Deep-seat or cloud couch | 80-110″ | 38-46″ | 2-4 |
| Sleeper sofa (closed) | 70-95″ | 34-40″ closed, about 80-90″ open | 2-3 |
| L-shaped sectional | 90-120″ on the long side | 70-100″ on the short side | 4-6 |
| U-shaped sectional | 110-150″ across | 70-100″ per return | 5-8 |
| Chaise (on a sofa or sectional) | 30-36″ wide | 60-70″ long | 1 lounging |
These are typical ranges, not rules: every listing in our store gives its own width, depth and height, and the measuring guide shows how to check them against your room.
Sleeper sofa dimensions by bed size
Sleeper sofa mattresses are usually shorter than standard bed mattresses, about 72″ long instead of 75-80″, so check the mattress size as well as the label.
| Bed size | Typical sleeper mattress | Typical sofa width | Depth when open |
|---|---|---|---|
| Twin | about 38″ x 72″ | 55-70″ | about 80-90″ |
| Full | about 52″ x 72″ | 70-80″ | about 80-90″ |
| Queen | about 60″ x 72″ | 80-90″ | about 85-95″ |
Fold-flat and flip-out sleepers use the seat cushions as the bed, so their sleeping area follows the sofa’s own width and depth. Each sleeper sofa listing gives its bed type and size, and queen sleeper sofas are grouped together; our sleeper sofa guide compares the mechanisms.
Shop by width: 70 to 80 inch sofas, 80 to 90 inch sofas and long sofas over 100 inches.
Couch dimensions in feet
| Type | Width in inches | Width in feet |
|---|---|---|
| Loveseat | 52-72″ | about 4.3-6 ft |
| Apartment-size sofa | 68-80″ | about 5.7-6.7 ft |
| Standard 3-seat sofa | 72-96″ (84″ most common) | 6-8 ft (7 ft most common) |
| Extra-long or 4-seat sofa | 96-110″+ | about 8-9.2 ft or more |
| L-shaped sectional (long side) | 90-120″ | 7.5-10 ft |
| U-shaped sectional (across) | 110-150″ | about 9.2-12.5 ft |
Most sofas are 32-40″ deep, about 2.7-3.3 feet. To convert, divide inches by 12.
Loveseat dimensions
A loveseat is usually 52-72 inches wide (about 4.3-6 feet), 30-38 inches deep and 30-36 inches tall overall, with a seat height of about 17-19 inches. It seats two adults; one under about 60 inches suits a bedroom, office or entryway better than a living room. See loveseats and loveseat vs sofa.
Seat dimensions that decide comfort
| Measurement | Typical range | What it means for you |
|---|---|---|
| Seat height | 17-19″ | Lower seats feel more relaxed; higher seats are easier to get out of. |
| Seat depth | 20-24″ standard, 25-30″ deep-seat | Standard depth suits sitting upright. Deep seats suit lounging and taller people; shorter people often add back pillows. |
| Arm height | 22-26″ | Low arms make a sofa look lighter and are good for lying down with your head on the arm. |
| Back height | 30-36″ overall | Low backs look modern and open up a room; high backs support your head. |
How many people does a sofa seat?
Allow roughly 24-30 inches of seat width per person. An 84″ sofa seats three adults comfortably; a loveseat seats two; a sectional seats one extra person for every corner or chaise section, depending on its layout.
What size sofa fits your room?
- Two-thirds rule: a sofa usually looks right when it is about two-thirds the length of the wall behind it.
- Walkways: leave 30-36″ for main paths through the room.
- Coffee table: about 14-18″ between the sofa’s front edge and the table.
- Mark it out: outline the sofa’s footprint on the floor with painter’s tape and live with it for a day.
For rug sizes, TV distance and sectional layouts, see living room layout.
Rules of thumb only; measure your room before you buy.
- Apartment or studioLoveseats and compact sofas, roughly 60–80" wide. Sleeper sofas double as a guest bed. Browse Loveseats
- Small room (up to about 12 × 12 ft)Sofas up to about 84" wide, or a small L-shaped sectional tucked into a corner. Browse Sofas
- Medium room (about 12 × 16 ft)Sofas of 84–100", or an L-shaped sectional that leaves a walkway of about 30". Browse Sectionals
- Large roomLong sofas over 100", U-shaped sectionals or a sofa and loveseat pair. Browse Sectionals
- Open-plan spaceA sectional or modular sofa can define the living area; leave 30–36" walkways around it. Browse Sectionals
Loveseat vs sofa vs sectional
A loveseat fits small rooms, apartments and reading corners. A standard three-seat sofa suits most living rooms. A sectional seats the most people and anchors an open-plan room, but needs floor space on two sides (L-shaped) or three (U-shaped).
Check the route in, not just the room
Most sofas that “don’t fit” would have fitted the room; it is the doorway, hallway or stairs that stop them. Compare the sofa’s depth, height and diagonal depth with your narrowest opening. Our measuring guide explains how, and the sofa finder checks it for you.
Frequently asked questions
What is the standard length of a 3-seater sofa?
Most three-seat sofas are 72-96 inches long, and about 84 inches is the most common size.
How deep is a standard sofa?
Overall depth is usually 32-40 inches. Deep-seat and cloud-style sofas are often 38-46 inches deep.
What is the difference between a loveseat and a sofa?
A loveseat seats two and is usually 52-72 inches wide; a sofa seats three or more and is usually 72 inches or wider.
How much does a sofa weigh?
Roughly 75-150 lb for a loveseat, 100-250 lb for a three-seat sofa, 200-350 lb for a sleeper sofa (the bed mechanism adds weight) and 200-500 lb or more for a sectional, depending on the frame, fill and size. Modular and compressed sofas split that weight into lighter pieces.
What are standard sectional couch dimensions?
An L-shaped sectional is typically 90-120″ on its long side and 70-100″ on its short side; a U-shaped sectional is about 110-150″ across. Seat depth is usually 21-25″, or 25-30″ on deep-seat and cloud sectionals, and a chaise adds about 60-70″ of length on one side.
How tall is a sofa from the floor?
Most sofas are 30-36 inches tall to the top of the back, with the seat about 17-19 inches off the floor. Low-profile sofas can be 28 inches or less overall; legs typically add 2-6 inches of clearance underneath.
How big is a couch in feet?
A standard three-seat couch is about 7 feet wide (84 inches) and roughly 3 feet deep. Loveseats are about 4.3-6 feet wide, and sectionals run about 7.5-12.5 feet on their longest side.
How long is an L-shaped couch?
Most L-shaped sectionals are about 90-120″ on the long side and 70-100″ on the short side; check both measurements on the listing against your walls.
Is a deep-seat sofa right for me?
If you like to curl up or lounge, or you are tall, yes. If you prefer to sit upright or are shorter, choose a standard seat depth or plan to use back pillows. Our guide to cushion firmness and fill covers the feel.