Mattress Size Chart
Ever bought a mattress that just didn’t fit right? Maybe it was too small for two people, or too big for your room.
Choosing the wrong mattress size can ruin your sleep and waste your money. That’s why checking a mattress size chart before buying is so important.
In this guide, we cover all U.S. mattress sizes — including Twin, Twin XL, Full, Queen, King, and California King — as well as European mattress sizes, so you can easily compare dimensions in inches and centimeters and find the perfect fit for your bed and bedroom.
Common Mattress Sizes Chart
These mattress sizes are most common across the U.S.
| Size | Width | Length |
|---|---|---|
| Twin | 38″ | 75″ |
| Twin XL | 38″ | 80″ |
| Full / Double | 54″ | 75″ |
| Queen | 60″ | 80″ |
| King | 76″ | 80″ |
| California King | 72″ | 84″ |
Twin Size Mattress
A twin mattress is compact, affordable, and perfect for small bedrooms. It’s ideal for kids, teenagers, and single sleepers who want a cozy bed without taking up much space. Commonly used in bunk beds or guest rooms, it offers great comfort for one person.
Dimensions: 38″ x 75″
Best for: Kids, teens, single adults, bunk beds
Recommended room size: At least 7′ x 10′
Twin XL Size Mattress
A Twin XL mattress offers extra legroom compared to a standard twin, making it perfect for tall sleepers, teenagers, and college dorm rooms. It’s a popular choice for single adults who need more length without using extra floor space.
Dimensions: 38″ x 80″
Best for: Tall individuals, teens, college students, guest rooms
Recommended room size: At least 7′ x 10′
Full (Double) Size Mattress
A Full size mattress, also known as a Double bed, offers more width than a Twin — making it a great choice for single adults, teenagers, or guest rooms. It provides enough space to stretch out comfortably without taking up too much room space.
Dimensions: 54″ x 75″
Best for: Single adults, teens, guest rooms
Recommended room size: At least 10′ x 10′
Queen Size Mattress
A Queen size mattress is the most popular bed size for couples and single adults who love extra space. It offers a perfect balance of comfort and room efficiency, fitting well in most master bedrooms or guest rooms.
Dimensions: 60″ x 80″
Best for: Couples, single adults, guest rooms
Recommended room size: At least 10′ x 10′
King Size Mattress
A King size mattress offers the ultimate space and comfort, perfect for couples who want plenty of room to stretch out. It’s ideal for master bedrooms and provides enough space for parents who co-sleep with kids or pets.
Dimensions: 76″ x 80″
Best for: Couples, families, master bedrooms
Recommended room size: At least 12′ x 12′
California King Mattress
A California King mattress is longer and slightly narrower than a standard King, making it perfect for tall sleepers who need extra legroom. It’s a great choice for couples who value space and comfort, especially in large master bedrooms.
Dimensions: 72″ x 84″
Best for: Tall individuals, couples, spacious master bedrooms
Recommended room size: At least 12′ x 12′
European Mattress Size Chart
When shopping in Europe, mattress dimensions differ slightly from U.S. sizes. Knowing the exact European mattress measurements helps you pick the perfect fit for your bed frame and room size.
| Size | Width | Length |
|---|---|---|
| Small Single | 30″ | 75″ |
| Single (EU) | 35″ | 78″ |
| Single (UK) | 35″ | 75″ |
| Single XL | 35″ | 82″ |
| Small Double | 47″ | 75″ |
| Double (EU) | 55″ | 78″ |
| Double (UK) | 53″ | 75″ |
| King (EU) | 63″ | 79″ |
| King (UK) | 59″ | 78″ |
| Grand / Super King | 71″ | 79″ |
RV Mattress Sizes
RV mattress sizes are made to fit compact spaces like campers, travel trailers, and motorhomes. They’re slightly different from standard U.S. mattress sizes, so knowing the right RV mattress dimensions helps you sleep comfortably on the road.
| RV Mattress Size | Width | Length |
| RV California king | 72″ | 84″ |
| King | 76″ | 80″ |
| RV king | 72″ | 80″ |
| Short king | 72″ | 75″ |
| Queen | 60″ | 80″ |
| RV or short queen | 60″ | 75″ |
| Full | 54″ | 75″ |
| RV full or double | 54″ | 75″ |
| Three-quarter size | 48″ | 75″ |
| RV truck | 35 to 42″ | 79 to 80″ |
| RV bunk | 28 to 35″ | 75 to 80″ |
| Twin XL | 38″ | 80″ |
| Twin | 38″ | 75″ |
| RV twin | 28″ | 75 to 80″ |
Uncommon Mattress Sizes
Some mattresses come in unique sizes for extra space or special bed frames.
| Size | Width | Length |
| Full XL | 54″ | 80″ |
| Three-Quarter (3/4) | 48″ | 75″ |
| California Queen | 60″ | 84″ |
| Wyoming King | 84″ | 84″ |
| Texas King | 80″ | 98″ |
| Alaskan King | 108″ | 108″ |
Key Factors When Choosing a Mattress
Choosing the right mattress is important for your comfort, health, and quality of sleep. With so many options available — from memory foam to hybrid mattresses — knowing what to look for helps you make the best choice. Here are the main factors to consider before buying:
Sleeping Position
Your sleeping position determines what kind of mattress will support your body best.
Side sleepers should choose a soft to medium memory foam mattress to cushion shoulders and hips.
Back sleepers sleep best on a medium-firm hybrid or latex mattress for proper spinal alignment.
Stomach sleepers need a firmer mattress to prevent sinking and lower back strain.
Mattress Firmness
The right mattress firmness depends on your comfort level and body weight.
A soft mattress (3–5 firmness) suits lighter people or side sleepers.
A medium-firm mattress (6–7) is best for most adults and couples.
A firm mattress (8–10) provides better support for heavier individuals or stomach sleepers.
Mattress Material
Different mattress materials offer unique benefits:
Memory Foam: Great for pressure relief and motion isolation. Example: Ideal for couples or people with joint pain.
Innerspring: Offers bounce and airflow, perfect for hot sleepers.
Latex: Naturally cool and durable, suitable for eco-conscious buyers.
Hybrid: Combines foam and coils — perfect if you want both comfort and support.
Body Weight
Your body weight affects how much you sink into the mattress.
Light sleepers (<130 lbs) often prefer softer foam mattresses. Average-weight sleepers (130–230 lbs) do well with medium-firm hybrids. Heavy sleepers (>230 lbs) should pick firmer mattresses for better support and long-term comfort.
Room Size
Before buying, check your bedroom dimensions to make sure the mattress fits comfortably.
A Queen mattress (60″ x 80″) fits best in a 10′ x 10′ room.
A King or California King is ideal for spacious master bedrooms (12′ x 12′ or larger).
Budget and Durability
Mattress prices vary by brand and material.
Foam mattresses start around $300–$600.
Hybrid and latex mattresses can range from $800–$2,000+.
Motion Isolation
If you share your bed, motion isolation is key. A memory foam or hybrid mattress absorbs movement — so you won’t feel your partner tossing and turning at night.
Temperature Control
Hot sleepers should look for cooling mattresses with breathable materials like gel-infused foam, open coils, or natural latex. These help maintain airflow and reduce heat buildup overnight.
Final Tip:
Always test the mattress when possible — either in-store or through a brand’s sleep trial. The best mattress is the one that supports your body, suits your sleeping style, and helps you wake up refreshed every morning.