What Size Is a King Bed?
Knowing the size of a king bed matters because it affects room layout, frame fit, bedding, and delivery access. This guide is for couples, families, and anyone comparing a king to a queen before buying. One common misunderstanding is that a king bed is just “slightly bigger” than a queen. In standard Canadian sizing, a king is much wider than a queen, while the length stays the same. If you are shopping for a king bed, measuring both the room and delivery path helps avoid access issues on delivery day. At Furniture Spot & Mattress Outlet in Halifax, we regularly help shoppers compare king, queen, and California king sizes before buying.
What is the standard size of a king bed?
A standard king bed is built for a 76-inch by 80-inch mattress. In current Canadian size charts, that is commonly listed as 193 cm by 203 to 203.5 cm. In feet, that equals 6 feet 4 inches by 6 feet 8 inches.
| Bed Size | Dimensions (inches) | Dimensions (cm) | Dimensions (feet) |
|---|---|---|---|
| King | 76" x 80" | 193 x 203 to 203.5 cm | 6'4" x 6'8" |
Small rounding differences can happen between stores, so it is still worth checking the exact product page before buying.
Is a king bed the same as a king mattress?
Usually, when people say “king bed,” they mean a bed made for a standard king mattress size. The mattress size is the main standard measurement: 76" x 80". The full bed frame, though, can be wider or longer once you add side rails, a headboard, or an upholstered surround.
That is why it is best to check both the mattress size and the full frame dimensions before you buy. A king mattress can be standard, while the outer frame still changes the amount of floor space the bed uses.
How does a king compare to a queen and a California king?
A standard king is wider than a queen and wider than a California king. Current Canadian size charts list:
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Queen: 60" x 80"
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King: 76" x 80"
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California King: 72" x 84"
| Bed Size | Dimensions (inches) | Key difference |
|---|---|---|
| Queen | 60" x 80" | Narrower than a king |
| King | 76" x 80" | Widest standard option |
| California King | 72" x 84" | Narrower but longer |
That means a standard king gives you 16 extra inches of width over a queen, with the same length. Compared with a California king, a standard king is 4 inches wider but 4 inches shorter.
Who is a king bed usually best for?
Current Furniture Spot's sizing guides describe a king as a strong fit for couples who want more space, families who may share the bed, and sleepers who want maximum width.
A king is often practical for:
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larger primary bedrooms
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couples who want more personal space
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families who sometimes co-sleep with children or pets
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shoppers upgrading from a queen and mainly wanting more width
If you share the bed, consider motion transfer and personal space. Width is the main reason most shoppers move from a queen to a king.
What should you measure before buying a king bed?
Before buying, measure your doorway, hallway turns, and stairs. Narrow hallways, stair turns, and tight doorways can make moving a king bed difficult, so room access should be measured before purchase.
Use this checklist:
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bedroom width and length
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doorway width
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hallway corners
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stair landings
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elevator depth, if you live in an apartment
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walking space around the bed
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space for side tables, dressers, and closet doors
If your room is small, plan walking clearance on both sides. A king can fit on paper but still make the room feel crowded once other furniture is added.
Do all king beds use the same support setup?
Not always. The king size itself is standard, but the support type can differ depending on the frame and base. Some king beds use a platform setup, while others use a box spring, foundation, or slatted support.
If you use a platform bed, confirm slat spacing and support requirements. If you use a box spring or foundation, make sure it matches the same king footprint. A standard king can also appear as a split king, which is commonly listed as two 38" x 80" pieces used together.
FAQ
What size is a king bed in inches?
A standard king bed size is 76" x 80".
What size is a king bed in feet?
A king is 6 feet 4 inches wide and 6 feet 8 inches long.
Is a king bed bigger than a queen?
Yes. A king is 16 inches wider than a queen, while both are usually 80 inches long.
Is a king bed wider than a California king?
Yes. A standard king is 76 inches wide, while a California king is 72 inches wide.
Is a king bed good for two people?
Yes. Current Canadian size guides describe king beds as a common choice for couples who want more sleeping space.
Related reading
Reality Check
Common mistakes include assuming the mattress size and full frame size are the same, checking only bedroom width and not the full delivery path, and choosing a king when the room may be better suited to a queen. Another common issue is focusing only on “bigger” without thinking about side tables, walking clearance, and the total footprint of the frame.
A king bed is usually best for couples who want more personal space and for larger bedrooms that can handle the extra width. It is a weaker fit for smaller rooms, tighter apartments, or shoppers who mainly need extra legroom rather than extra width. In those cases, a queen or California king may make more sense depending on the room and layout.
