Rug Size Calculator
Enter your room dimensions and tell the calculator what type of room and placement style you want. It will recommend an ideal rug size, snap to the nearest standard size you can actually buy, calculate area and room coverage, and show estimated cost per square foot. Switch between feet and metres at any time.
How to choose the right rug size
The most common rug mistake is going too small. A rug that is too small creates an ungrounded, "floating island" effect where the furniture seems to hover unconnected from the floor. The general rule is to leave 18 to 24 inches (45-60 cm) of bare floor between the rug edge and the wall, which frames the rug without making the room feel cramped. For a living room, the rug should at minimum anchor the seating group by having the front legs of all seating on it. For a dining room, the rug must be large enough that chairs remain on the rug even when fully pulled out. For a bedroom, the rug should extend at least 18 inches beyond each side of the bed.
Room-by-room rug sizing rules
Living rooms: the most popular placement is front-legs-on-the-rug, which anchors the seating without needing a very large rug. A sofa that is 7 ft long with front legs on the rug needs a rug at least 8-9 ft wide to feel balanced. Dining rooms: add 24 to 30 inches on each side of the table to ensure chairs remain on the rug. A 6-person rectangular table (around 36 x 60 inches) needs at minimum an 8 x 10 ft rug. Bedrooms: place the rug so it slides under the lower two-thirds of the bed, extending 18-24 inches on each side and at the foot. For a queen bed this typically means an 8 x 10 ft rug; for a king, a 9 x 12 ft. Hallways: choose a runner that is about 6 inches narrower than the hallway on each side and 12-18 inches shorter than the hallway to allow for transitions at doorways.
Rug area and room coverage
Interior designers suggest a rug cover roughly 40-65% of the floor area in most rooms. Below 30% coverage the rug looks like an afterthought, while coverage over 70% starts to feel more like wall-to-wall carpet. The room-coverage percentage this calculator shows helps you check that your chosen rug sits in that comfortable middle range. If the coverage is too low, size up; if it is over 70%, either size down or embrace the cosy, fully-carpeted aesthetic intentionally.
How to use the cost estimator
Rug prices are most often quoted per square foot or per square yard. Enter the price per square foot from your retailer's listing to see the total cost estimate for the recommended rug dimensions. To convert a price-per-square-yard figure, divide by 9 (since 1 square yard = 9 square feet). Keep in mind this estimates cost based on the ideal rug dimensions; the nearest standard size may be slightly larger or smaller, so verify the final price against the exact size you order.
Standard rug sizes by room
| Room | Typical rug size | Notes |
|---|---|---|
| Small living room | 5 x 7 ft or 5 x 8 ft | Front-legs-on placement |
| Medium living room | 8 x 10 ft | Most popular size overall |
| Large living room | 9 x 12 ft or 10 x 14 ft | All-legs-on is achievable |
| Small dining room (6-seat table) | 8 x 10 ft | Allows 2 ft chair pull-out |
| Large dining room (8-seat table) | 9 x 12 ft | Allows 2 ft chair pull-out |
| Twin bedroom | 5 x 8 ft | Extends 18 in on sides and foot |
| Full / Queen bedroom | 8 x 10 ft | Extends 18-24 in on sides and foot |
| King bedroom | 9 x 12 ft | Extends 18-24 in on sides and foot |
| Hallway runner | 2-3 ft x 8-12 ft | Leave 6 in from each wall |
| Kitchen runner | 2.5 x 7 ft | Covers main work zone |
Common commercially available sizes. When in doubt between two sizes, choose the larger one.
Frequently asked questions
What is the most popular rug size?
8 x 10 feet (about 2.4 x 3 m) is the most popular rug size in the US and fits medium living rooms, dining rooms with a standard 6-person table, and queen or king bedrooms. It is also the easiest size to find in a wide range of styles and price points.
How do I know if a rug is too small?
A rug is too small if none of the furniture legs rest on it in a living room, if dining chairs slide off the rug when you pull them out, or if the rug covers less than 30-35% of the room area. The classic test is to place painter's tape on the floor in the shape of the rug and evaluate the border before you buy.
Should the rug go under the sofa or in front of it?
You have three options: all legs on (most formal, requires a larger rug), front legs on (the most popular balance of cost and look, anchors the seating group), or no legs on / floating (works only with a coffee table setup and a clearly defined seating area). Front-legs-on is the recommendation for most rooms.
How big should a rug be for a dining room table?
Add at least 24 inches (2 ft) to each side of your table dimensions. For a standard 36 x 60 inch dining table, that means a minimum of 7 x 9 ft, and most designers recommend stepping up to 8 x 10 ft to be safe. When in doubt, err on the side of larger: a too-small dining rug causes chairs to scrape off the edge every time someone sits down.
What size rug goes under a king-size bed?
A 9 x 12 ft rug is the standard recommendation for a king-size bed. It extends about 24 inches on each side and at the foot, giving you a soft landing when you step out of bed. A 10 x 14 ft rug works for very large master bedrooms. Slide the rug under the lower two-thirds of the bed frame so the headboard end sits on bare floor or on a bedside rug.
What size runner should I use in a hallway?
Choose a runner that is 6 inches narrower than your hallway on each side (so a 4 ft wide hallway gets a 3 ft wide runner) and 12-18 inches shorter than the hallway length to leave space for doorway transitions. Most hallway runners are 2-3 ft wide and 6-14 ft long.