A California king is the longest standard mattress you can buy, but it is not the biggest bed out there. Three oversized sizes are larger: the Texas king (80 x 98 inches), the Wyoming king (84 x 84 inches) and the Alaskan king (108 x 108 inches). The Alaskan king is the largest at 9 feet by 9 feet.
These beds are rare, usually custom-made and need very large bedrooms. Below, we compare every king size, explain the room each one needs, and share practical alternatives that give you extra space without special-order bedding.
King Bed Sizes Compared
| Bed size | Dimensions (W x L) | Surface area | Good to know |
|---|---|---|---|
| King (Eastern king) | 76 x 80 in. | 6,080 sq. in. | The widest standard size. Bedding is easy to find. |
| California king | 72 x 84 in. | 6,048 sq. in. | Four inches longer and four inches narrower than a king. Good for tall sleepers. |
| Texas king | 80 x 98 in. | 7,840 sq. in. | Extra long for very tall sleepers. Usually custom. |
| Wyoming king | 84 x 84 in. | 7,056 sq. in. | A 7-foot square. Usually custom. |
| Alaskan king | 108 x 108 in. | 11,664 sq. in. | A 9-foot square and the largest bed size. Usually custom. |
For standard sizes from twin to California king, see our mattress size chart.
Alaskan King vs. California King: What Is the Difference?
An Alaskan king is about 36 inches wider and 24 inches longer than a California king. It has nearly twice the sleeping surface. A California king, by comparison, is a standard size, so mattresses, frames, sheets and comforters are widely available.
- Choose a California king if you are tall, want a standard size, and your bedroom is a typical primary suite.
- Consider an Alaskan king only if you regularly share the bed with children or pets, have a very large room, and are comfortable with custom bedding and longer lead times.
Our California king vs. king guide compares the two most popular large sizes in detail.
Texas King and Wyoming King Explained
Texas King: 80 x 98 Inches
Despite the name, the Texas king is not a Texas standard. It is simply an extra-long oversized bed. It is about 14 inches longer than a California king, which can help very tall sleepers, but it is still only slightly wider than a standard king.
Wyoming King: 84 x 84 Inches
The Wyoming king is a 7-foot square. It is 8 inches wider than a standard king and 4 inches longer, making it a middle ground between a king and an Alaskan king.
How Big Does Your Bedroom Need to Be?
Plan for at least 24 to 30 inches of walking space on the sides and at the foot of the bed, plus room for nightstands and dressers. As a practical starting point:
- King or California king: at least about 12 x 12 feet, with more space if you add a dresser and chest.
- Wyoming king: at least about 12 x 12 feet, and realistically larger.
- Texas king: at least about 12 x 13 feet, because the bed is very long.
- Alaskan king: at least about 14 x 14 feet.
Use our guides to bedroom size by bed and space around a king bedroom set to plan your layout.
Winslow Storage Bedroom Set — a storage bedroom set that helps a king-size bedroom stay organized.
The Trade-Offs of Oversized Beds
- Custom mattresses: Oversized mattresses are usually made to order, can take weeks to produce and often cost considerably more than standard kings.
- Specialty bedding: Sheets, comforters and mattress protectors are harder to find and usually cost more.
- Frames: You will likely need a custom frame or platform.
- Delivery: A 9-foot mattress may not fit through doorways, hallways or stairwells. Measure the full delivery path first.
- Resale and moving: An oversized bed may not fit in your next home.
Smarter Alternatives to an Oversized Bed
Split King
A split king uses two twin XL mattresses (each 38 x 80 inches) side by side to create the size of a standard king. It is ideal for couples who want different firmness levels or separate adjustable bases.
Two Beds Side by Side
Some families place two full or queen beds side by side to create a very wide sleeping area for co-sleeping. Two queens together measure 120 x 80 inches, which is wider than an Alaskan king, and you can still use standard bedding on each mattress.
California King for Tall Sleepers
If length is your main concern, a California king gives you 84 inches of length with standard bedding and frames.
How Much Are King Size Beds?
A king bed has two main costs: the mattress and the bed frame.
- King mattresses commonly range from several hundred dollars for basic foam models to $2,000 or more for premium hybrid and specialty mattresses.
- King bed frames and beds range from simple platform frames to upholstered, storage and solid wood beds that cost more.
- Foundations or adjustable bases add to the cost but may be required for mattress support and warranty.
At Bel Furniture, mattresses qualify for warranty coverage when they are sold as a set with a foundation or power base, so plan your support system with your mattress. Our bed frame vs. box spring guide explains your options, and our bedroom set cost guide covers complete room budgets.
Frequently Asked Questions About Oversized Beds
What mattress is bigger than a California king?
The Texas king (80 x 98 inches), Wyoming king (84 x 84 inches) and Alaskan king (108 x 108 inches) are all bigger than a California king, which measures 72 x 84 inches. The Alaskan king is the largest.
What is the biggest bed size?
The Alaskan king is the biggest common bed size at 108 x 108 inches, or 9 feet by 9 feet. It is usually custom-made.
What is the difference between an Alaskan king and a California king?
An Alaskan king measures 108 x 108 inches, while a California king measures 72 x 84 inches. The Alaskan king is about 36 inches wider and 24 inches longer, but it requires custom bedding and a very large room.
How big is a Texas king bed?
A Texas king bed measures 80 x 98 inches. It is about 14 inches longer than a California king and is usually custom-made.
How big is a Wyoming king bed?
A Wyoming king bed measures 84 x 84 inches, a 7-foot square. It is 8 inches wider and 4 inches longer than a standard king.
Is a king or California king bigger?
A standard king is wider at 76 x 80 inches, while a California king is longer at 72 x 84 inches. Their total surface areas are nearly the same.
How big should a room be for an Alaskan king bed?
Plan for a bedroom of at least about 14 x 14 feet so you have walking space around the bed and room for nightstands.
How much are king size beds?
A king bed includes a mattress and a frame. King mattresses commonly range from several hundred dollars for basic foam models to $2,000 or more for premium models, and frames range from simple platforms to upholstered, storage and solid wood beds that cost more.
Why Shop for Your King Bed at Bel Furniture?
Whether you choose a king, a California king or a split king setup, it helps to compare beds and mattresses side by side. Here is why Texas families shop at Bel Furniture:
- Factory-direct pricing: We buy directly from manufacturers whenever possible, so you are not paying for extra middleman markups.
- Texas's largest family-owned furniture retailer: Bel Furniture is Texas-grown and family-owned, and we are recognized among the Top 100 furniture retailers in the United States.
- 16+ showrooms across Texas: See, sit and compare in person in Greater Houston, San Antonio, Beaumont, Corpus Christi, Del Rio, Victoria and Lake Jackson.
- Free delivery and setup on qualifying purchases: Our team brings qualifying orders into your home and sets them up. Ask your showroom what qualifies for your order and ZIP code.
- A wide range of styles, materials and brands: From budget-friendly starter pieces to solid wood, leather and power-reclining furniture, you can compare it all in one place.
- Flexible ways to pay: Special financing for up to 60 months on qualifying purchases with approved credit, plus a no-credit-needed lease-to-own option through Progressive Leasing.*
- Purchase protection: Our 180-Day Price Guarantee and 3-Day Satisfaction Guarantee give you extra confidence. Terms and exclusions apply.
Shop king bedroom sets, king mattresses and California king mattresses, or visit a showroom to test sizes in person.
*Lease-to-own is provided by Prog Leasing, LLC or its affiliates. Acquiring ownership by leasing costs more than the retailer's cash price. Not all applicants are approved. Not available in MN, NJ, VT, WI or WY. Special financing is subject to credit approval and promotional terms.
