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Mattress size is one of the most practical decisions in the buying process, and one of the most overlooked. Pick too small and you'll feel cramped. Pick too large and the mattress dominates the room. Get it right and you barely think about it at all.
This guide covers every standard mattress size, who each one is best for, what room dimensions you'll need, and what to consider before buying.
Choose extra length for a taller sleeper, or extra width to spread out.
Explore solo sizes 02 / For twoCompare its 60-inch width with your current bed and available floor space.
Explore Queen 03 / For more roomKing gives you more width. CA King adds length for taller sleepers.
Compare the larger sizesAll dimensions are width × length. These are nominal US sizes; check the exact mattress and frame specifications before ordering.
Choose a pair to see the difference at the same scale.
These are mattress dimensions. Your bed frame, open drawers and walking space need extra room.
Scroll across the chart on smaller screens.
| Size | Dimensions (inches) | Room starting point: | Best For |
|---|---|---|---|
| Twin | 38 × 75 | 7 × 10 ft | Kids, single sleepers |
| Twin XL | 38 × 80 | 8 × 10 ft | Tall single adults, dorms |
| Full | 54 × 75 | 10 × 10 ft | Single adults, guest rooms |
| Full XL | 54 × 80 | 10 × 10 ft | Tall single adults |
| Queen | 60 × 80 | 10 × 11 ft | Couples, most bedrooms |
| King | 76 × 80 | 12 × 12 ft | Couples, spacious rooms |
| CA King | 72 × 84 | 12 × 12 ft | Tall sleepers, narrow rooms |
Room sizes are starting points. Allow for your frame, furniture and comfortable walking space. Check your layout.
Open a size for the benefits, trade-offs and room guidance.
The twin is the smallest standard mattress size. At 38 inches wide, it gives one person a comfortable sleeping space without taking over a room. Twin mattresses are widely available and among the most affordable options. Perfect for kids' rooms and small guest spaces.
Room starting point: 7 × 10 ft
Same width as a twin, but 5 inches longer. That extra length makes a real difference for adults over 6 feet tall. Twin XL is the standard size in most college dormitories. Bedding is slightly harder to find than standard twin, but widely available online.
Room starting point: 8 × 10 ft
A full mattress (also called a double) is 16 inches wider than a twin, enough for one adult to sleep comfortably with some room to move. It can fit two adults, but it's tight. For couples who want shared space, a queen is a better long-term choice. Full mattresses suit single adults or guest rooms where space is limited.
Room starting point: 10 × 10 ft
The Full XL offers the same extra length as a Twin XL but with the wider profile of a full. It's a niche size, genuinely useful for tall adults sleeping alone who have limited bedroom width. Bedding can be harder to find. Worth considering if the dimensions are right for your room and your height.
Room starting point: 10 × 10 ft
At 60 × 80 inches, a Queen gives two people 30 inches of width each if the space is divided evenly. Compare it with your current mattress, try it together and measure the frame in your room. A King adds 16 inches of total width without adding length; a Full saves space but is narrower and shorter.
Room starting point: 10 × 11 ft
A King gives two people 38 inches of width each if divided evenly, the same width per person as a Twin XL. It is 16 inches wider than a Queen and the same 80 inches long. Check your actual frame, walking routes and delivery access. More width does not eliminate movement transfer; mattress construction matters too.
Room starting point: 12 × 12 ft
The CA King is 4 inches narrower but 4 inches longer than a standard king. It's the right choice for tall sleepers who regularly feel their feet hanging off the end of a standard king. It's also well-suited to long, narrower master bedrooms where a wider king wouldn't fit as well. Bedding selection is more limited than standard king.
Room starting point: 12 × 12 ft
Best for: Unusual room shapes, antique or custom bed frames, RV beds, and specialty applications.
If none of the standard sizes work for your situation, custom mattress sizing is available through specialty manufacturers. RV sizes (RV queen, RV king, RV short queen) are a common custom category. Measure your available space precisely before ordering.
Start with the people using the bed, then check the room. If you share a bed, compare sizes together.
If children or pets regularly join you in bed, step up one size from what you'd normally choose. A couple that would be fine in a queen might want a king once kids start appearing at 2 AM.
Room size matters beyond just fitting the mattress. You want:
A Queen leaves more walking space than a King in the same room. The room sizes in this guide are planning starting points, not guarantees of fit: your bed frame, furniture, door swings and access needs determine what works.
Measure the outside of the bed frame, not just the mattress. Mark that footprint on the floor with tape. Then measure the remaining space on each side and at the foot separately, allowing for doors, open drawers and your usual walking routes.
If you're visiting one of our LA showrooms, bring your room measurements. Our team can help you visualize how each size will work in your specific space.
Confirm the size before ordering. Review the exchange information and Love Your Bed Guarantee terms for eligibility, service fees and exclusions.
Quick reference for all standard US mattress sizes and bed sizes, useful when you're cross-referencing bedding, bed frames, or international measurements.
| Mattress size | Inches | Feet | Centimeters |
|---|---|---|---|
| Twin / Single | 38" × 75" | 3'2" × 6'3" | 97 × 191 cm |
| Twin XL | 38" × 80" | 3'2" × 6'8" | 97 × 203 cm |
| Full / Double | 54" × 75" | 4'6" × 6'3" | 137 × 191 cm |
| Full XL | 54" × 80" | 4'6" × 6'8" | 137 × 203 cm |
| Queen | 60" × 80" | 5'0" × 6'8" | 152 × 203 cm |
| King (Eastern King) | 76" × 80" | 6'4" × 6'8" | 193 × 203 cm |
| CA King (Western King) | 72" × 84" | 6'0" × 7'0" | 183 × 213 cm |
These are common US mattress dimensions. King offers the most width among these sizes, while CA King offers the most length. Full XL and RV sizes may have fewer mattress and bedding options; confirm the exact dimensions before buying.
For a visual side-by-side and printable bed size comparison chart, see our mattress sizes overview. For specific size pages, jump to Twin, Full, Queen, King, or CA King collections.
Compare Queen and King together. Queen is 60 × 80 inches; King is 76 × 80 inches, giving each person 8 more inches of width when divided evenly. CA King is 72 × 84 inches for extra length. Choose the space you both find comfortable after allowing for the actual frame and bedroom layout.
Queen, at 60 × 80 inches. It works for most bedrooms, accommodates couples and single adults alike, and is more affordable than king.
Standard king (76" × 80") is wider. CA King (72" × 84") is longer. If you or your partner are over 6'2", go CA King. If you want maximum width and have a wide room, go standard king.
A split king is two twin XL mattresses placed side by side in a king-size frame. It's popular for couples using adjustable bed bases who want independent control of each side, different firmness, different incline. A practical solution for partners with different sleep needs.
No. A queen (60" wide) is 6 inches wider than a full (54" wide). They require different frames and bedding.
Most college dorm rooms use twin XL mattresses (38" × 80"). Confirm with your specific institution before purchasing, as some older dorms still use standard twin.
Measure the available space in your RV precisely. RV beds often have non-standard dimensions. Common options include RV queen (60" × 75"), RV king (72" × 75"), and RV short queen (60" × 74"). Custom sizing may be needed for older models.
More space can make it easier to turn and find a comfortable position, especially when sharing. It does not guarantee better sleep or remove movement transfer, which also depends on the mattress construction. Try your shortlisted size with your partner and compare it with the space you have now.
Start with a mattress type that suits how you sleep, then compare the feel in person.
Prices for Queen · Choose options for other sizes
Est. $124.84/month for 6 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 6 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 6-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $749.00 for one selected item by 6 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest works
Est. $158.17/month for 6 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 6 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 6-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $949.00 for one selected item by 6 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest works
Est. $146.50/month for 6 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 6 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 6-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $879.00 for one selected item by 6 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest works
Est. $91.63/month for 24 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 24 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 24-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $2,199.00 for one selected item by 24 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest works
Est. $92.42/month for 12 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 12 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 12-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $1,109.00 for one selected item by 12 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest worksBuying guides and sleep advice, no email signup required.
