A complete guide to mattress size dimensions
To help you select the appropriate mattress size, we’ve put together a guide to standard dimensions and which mattress can best suit your needs.
| Mattress size | Dimensions | Minimum room size | Best for | Overview |
|---|---|---|---|---|
|
76" X 80", 193 x 203.2 cm
|
193 X 203.2cm
|
Two sleepers, with room to spare
|
Spacious and luxurious
|
|
|
72" X 84", 182.9 x 213.4 cm
|
182.9 X 213.4cm
|
Two taller individuals
|
Slightly narrower than a regular king
|
|
|
60" X 80", 152.4 x 203.2 cm
|
152.4 X 203.2 cm
|
Single sleepers, couples, or even pets
|
More popular size
|
|
|
54" X 75", 137.2 x 190.5 cm
|
137.2 X 190.5 cm
|
Single sleepers or couples (being close)
|
Sometimes called a double
|
|
|
38" X 80", 96.5 x 203.2 cm
|
96.5 X 203.2 cm
|
Tall single sleepers
|
Five inches longer than the standard twin size
|
|
|
38" X 75", 96.5 x 190.5 cm
|
96.5 X 190.5 cm
|
Single sleepers
|
Smallest of all standard sizes
|
How to choose the right mattress size
When picking the right mattress, there is more to consider beyond its dimensions and minimum room size. Mattresses directly impact the quality of your sleep and should be considered an investment. Keep these factors in mind when shopping for a new mattress:
Sleeping partner
One of the most critical factors when picking a mattress size is who you are sharing the bed with. While a full mattress suits most couples, it may not suit couples with children or pets. A king mattress might be best if you share a bed with multiple people.
Height
Most beds are wide enough for at least one person but may not always be long enough. For example, a twin bed might be wide and long enough for an average-height sleeper but certainly won’t be able to accommodate someone over 6’5”.
Room size
Your bed should leave enough space for the rest of your furniture. As a rule of thumb, you’ll want to leave at least two feet of free space on each side of your bed to ensure you can move around comfortably.Also, consider door and staircase width, as these factors can dictate how you maneuver your mattress.
Sleep positions
When choosing your mattress size, consider how much space you need in bed. If you move around when you sleep, are a side sleeper, combination sleeper or just want extra space, a wider mattress might be a better choice for you.
Find your perfect mattress
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Purple Mattress®
Added cushioning enhances comfort
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Medium firm feel
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2” of GelFlex Grid instantly adapts as you move
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4” of Base Support Foam adds stability
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3.25” of Comfort Foam takes pressure off hips + shoulders
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Purple Plus® Mattress
Reduced motion transfer, better breathability
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Medium feel
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2” of GelFlex Grid instantly adapts as you move
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7” of Base Support Foam reduces motion transfer
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2” of Ultra Comfort Foam adds responsive comfort
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Upgraded comfort layer boosts breathability
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Purple Restore™ Hybrid Mattress
Upgrade to the enhanced benefits of GelFlex®Grid with hybrid responsive pressure relief and cooling.
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Available in soft or firm
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2” GelFlex® Grid instantly adapts as you move
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Edge-to-Edge Coils increase responsive support
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Up to 2X Cooler compared to leading competitors
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Comfort Foam for added pressure relief
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Purple RestorePlus™ Hybrid Mattress
Provides core body support plus extra comfort + cooling benefits, for uninterrupted sleep.
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Available in soft or firm
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3” GelFlex® Grid instantly adapts + boosts comfort
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2 Zone Edge-to-Edge Coils for core body support
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Up to 3X Cooler compared to leading competitors
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Ultra Comfort Foam enhances cradling + breathability
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Purple RestorePremier™ Hybrid Mattress
Sleep deeper with best-in-class cooling, superior pressure relief + aligning support for restorative sleep.
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Available in soft or firm
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3” GelFlex® Grid instantly adapts + boosts comfort
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CoolFlex™ Coils for dynamic pin-point support
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Up to 4X Cooler compared to leading competitors
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Cradles your body’s contours for superior pressure relief
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Ultra Comfort Foam enhances cradling + breathability
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Life-changing sleep, paid for at your own pace with as low as 0% APR financing.
Get overall comfort with the right mattress
Choosing a mattress can be confusing, especially when facing many options. However, you can make the process easier by considering the size of your room, height, budget, and whether you plan to share a bed with someone else.
We’re here to help you find that just-right fit — take our Mattress Quiz for personalized recommendations based on your sleep habits.
Frequently Asked Questions
Measure a mattress from head to foot to get the length and side to side to get the width. Depending on your bed base, you may also need to measure a mattress’ depth before purchasing.
Yes, full mattresses are big enough for two people and are popular among couples. However, couples with specific sleeping preferences might benefit more from a queen or king mattress. Alternatively, you can get two twin XLs to create a split-king and use an adjustable frame.
Read our article to understand pros and cons: Full mattress vs Queen Mattress.
The current most popular mattress size is the queen, which can suit single sleepers and partners. Shopping for accessories like sheets and duvets is easy as well, as they are highly available.
Technically, you can use two twin XL mattresses on a split-king bed frame. This can benefit couples with different sleeping preferences and needs.
Also, consider king vs California king differences.
While a standard pillow size is often good enough for any sleeper, some pillows specifically suit queen and king mattresses. If you tend to toss and turn in your sleep, buying a larger pillow can also help enhance your sleep.
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