King Size Bed Dimensions Guide (2025) – Inches, Feet & CM
What Size Is a King Bed? | King Bed Dimensions Guide
Are you wondering what size is a king bed before upgrading your bedroom? A king-size bed offers generous space and luxurious comfort — perfect for couples or anyone who values extra room while sleeping. But before you shop, it’s essential to understand the exact king bed dimensions.
Standard King Bed Dimensions (US)
A standard king bed, also known as an Eastern King, measures:
- 76 inches wide
- 80 inches long
In metric terms:
- 193 cm wide
- 203 cm long
This makes the king the widest standard mattress size on the market. It’s ideal for partners, families with children, or even pet owners who like sharing the bed with their furry friends.
California King vs. Standard King
Many people confuse the California King with the standard king. Here’s how they compare:
- California King Size: 72 inches wide x 84 inches long
- Standard King Size: 76 inches wide x 80 inches long
If you’re tall and need extra legroom, the California King is a better option. If you prefer more width, stick with the standard king-size mattress.
Ideal Room Size for a King Bed
To comfortably fit a king bed, your room should be at least:
- 12 feet by 12 feet (approx. 3.65m x 3.65m)
This ensures enough space for bedside tables, dressers, and movement around the bed.
Mattress Size Comparison Chart
| Mattress Size | Dimensions (inches) |
|---|---|
| Twin | 38 x 75 |
| Full (Double) | 54 x 75 |
| Queen | 60 x 80 |
| King | 76 x 80 |
| California King | 72 x 84 |
The king-size mattress stands out for its width, giving couples plenty of room to sleep undisturbed.
King Bedding Dimensions
When shopping for bedding for a king bed, look for the following sizes:
- Fitted Sheet: 76” x 80”
- Flat Sheet: Around 108” x 102”
- Comforter/Duvet: 104” x 90” or larger
- King Pillows: 20” x 36”
Frequently Asked Questions
❓ What size is a king bed in feet?
A standard king bed is about 6.3 feet wide by 6.6 feet long.
❓ Is a king bed bigger than a queen?
Yes, a king is 16 inches wider than a queen. Both are 80 inches long.
❓ What’s the difference between king and California king?
A king bed is wider, while a California king is longer. Tall sleepers prefer the Cal king; others prefer the king for more width.
❓ Can a king bed fit in a 10×10 room?
It can, but space will be tight. A 12×12 room or larger is ideal.
❓ Do two twin beds make a king?
No. Two twin XL mattresses (38” x 80”) placed side-by-side equal a king.
❓ What is the most spacious mattress size?
The king-size bed offers the most width of any standard mattress, making it the best for shared sleeping.
❓ Is king bed good for couples?
Absolutely. It provides ample space for couples to sleep comfortably without disturbing each other.
❓ What’s the benefit of a king-size bed?
Maximum sleeping space, ideal for shared sleep, large rooms, and comfort.
❓ Can king mattresses fit through doors?
Most standard doors (30–36 inches wide) can accommodate flexible king mattresses. You may need to bend it slightly during delivery.
❓ Is king bed suitable for all body types?
Yes. The wide surface area suits all sleeping styles and body sizes, especially for restless or combination sleepers.
Final Thoughts
So, what size is a king bed? It’s 76 inches wide by 80 inches long, offering unmatched room and sleeping comfort. Whether you’re upgrading from a queen or furnishing a master bedroom, a king-size mattress is a smart choice for comfort and luxury.
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