Mattress sizes
Wyoming King Mattress Dimensions
Quick answer
A Wyoming King mattress measures 84 inches wide by 84 inches long (213 by 213 cm), which is 49 square feet of sleeping surface. Shared by two people that is 42 inches each. This is a specialty size rather than a standard one, so dimensions vary between manufacturers.
The wyoming king is a specialty size, which means the 84 by 84 inch figure below is typical rather than guaranteed. The numbers that actually decide whether it works in your bedroom are the room it needs and the height it ends up at, both of which are below.
What are the exact wyoming king mattress dimensions?
| Measurement | Inches | Centimetres | Feet |
|---|---|---|---|
| Width | 84 | 213 | 7 ft |
| Length | 84 | 213 | 7 ft |
| Sleeping area | 7,056 sq in | 45,369 sq cm | 49 sq ft |
| Width per sleeper | 42 in | 107 cm | 3.5 ft |
Convention, not a standard
This is widely repeated guidance rather than a measured standard. Treat it as a starting point.
How much room does a wyoming king bed need?
Add about 3 inches of frame on each side, then the walking clearance you want. The convention is 24 inches to squeeze past and 30 or more to be comfortable.
| Clearance on each side | Room width needed | Room length needed |
|---|---|---|
| 24 in | 138 in (11.5 ft) | 114 in (9.5 ft) |
| 30 in | 150 in (12.5 ft) | 120 in (10 ft) |
| 36 in | 162 in (13.5 ft) | 126 in (10.5 ft) |
Convention, not a standard
This is widely repeated guidance rather than a measured standard. Treat it as a starting point.
Assumes a frame about 3 inches wider than the mattress on each side, clearance on both sides and at the foot, and the headboard against a wall. Check yours with Room Size and Clearance Calculator.
How does a wyoming king compare to other mattress sizes?
| Size | Width (in) | Length (in) | Area (sq ft) | Standard size |
|---|---|---|---|---|
| Wyoming King (this page) | 84 | 84 | 49 | No |
| Twin | 38 | 75 | 19.8 | Yes |
| Twin XL | 38 | 80 | 21.1 | Yes |
| Full (Double) | 54 | 75 | 28.1 | Yes |
| Full XL | 54 | 80 | 30 | Yes |
| Queen | 60 | 80 | 33.3 | Yes |
| Olympic Queen | 66 | 80 | 36.7 | No |
Industry standard
These are standard published dimensions, the same across manufacturers.
Which mattresses come in wyoming king?
We do not currently list a mattress that publishes wyoming king as its size, which is normal for a size this uncommon. The mattresses below are the ones we do list, in other sizes. Check the size on the product page before ordering, and expect a wyoming king to need a specialty retailer.
Novilla Twin XL Mattress
$96.998 inch twin xl memory foam.
Check price on Amazon
Novilla 8 Inch Twin Mattress
$104.998 inch twin memory foam.
Check price on Amazon
EGOHOME 8 Inch Twin Mattress
$109.998 inch twin memory foam, medium firm feel as the maker describes it.
Check price on AmazonFrequently asked questions
What are the dimensions of a wyoming king mattress?
A wyoming king mattress measures 84 inches wide by 84 inches long, or 213 by 213 centimetres. That works out to 49 square feet of sleeping surface. This is a specialty size, so confirm the exact figures with the manufacturer before buying a frame or bedding for it.
How big a room does a wyoming king bed need?
For comfortable movement, allow the mattress plus about 3 inches of frame on each side plus 30 inches of walking clearance. For a wyoming king that means roughly 150 inches of room width and 120 inches of length. You can get away with 24 inches of clearance, but a nightstand will crowd it.
What size sheets fit a wyoming king mattress?
Buy sheets labelled wyoming king. The fitted sheet also has to clear the depth of the mattress, so check the pocket depth separately: standard pockets fit up to 12 inches, deep pockets 13 to 17 inches, and extra deep pockets 18 to 22 inches. A topper adds its full thickness to what the sheet must clear.
Is a wyoming king long enough for a tall person?
A mattress should be about 4 to 6 inches longer than the tallest sleeper. At 84 inches, a wyoming king suits someone up to roughly 80 inches tall, which is 6 feet 8 inches. Above that, look at an even longer specialty size.
Does wyoming king refer to thickness as well?
No. Size describes only the width and length. Thickness is separate and ranges from about 6 inches to over 16, with 9 to 12 inches counting as standard. Thickness changes the total height of the bed and the sheet pocket depth you need, but it never changes the 84 by 84 inch footprint.
How to read the numbers on this page. Standard mattress and bedding dimensions are industry-wide and the same across manufacturers. Guidance like replacement intervals, firmness by body weight and walking clearance is convention rather than a measured standard, and every table here says which it is. Where a manufacturer does not publish a figure we leave it out instead of estimating. This is not medical advice: a mattress is not a treatment for a medical condition, and persistent pain is a reason to see a clinician.