King Size Beds for Sale with Mattress
Find the perfect king bed and mattress set. Expert reviews, size charts, and top-rated picks for luxury sleep.
Shop Top-Rated SetsWhy Choose a King Size Bed with Mattress Included?
A king size bed is the ultimate upgrade for couples, families, or anyone who values space and comfort. When you buy a king size bed with mattress included, you simplify the shopping process, ensure compatibility, and often save money compared to buying pieces separately. Whether you're upgrading from a queen or furnishing a new master bedroom, this guide covers everything you need to know about king size beds for sale with mattress options, from dimensions and materials to firmness levels and budget considerations.
If you're also considering alternatives for other rooms, explore our guides on full size beds for sale with mattress or cheap twin beds with mattress included. For compact spaces, our space-saving bunk beds might be a great fit.
What to Look For in a King Bed with Mattress
Dimensions
76"W x 80"L – Plenty of space for two
Mattress Type
Memory foam, hybrid, innerspring, or latex
Firmness
Plush, medium, firm – match your sleep style
Price Range
$800–$2,500 for quality sets
Frame Material
Wood, metal, or upholstered
Assembly
Easy setup with included tools
King Size Comparison Chart
| Bed Size | Width | Length | Best For | Avg. Price (Set) |
|---|---|---|---|---|
| King | 76" | 80" | Couples, large master bedrooms | $1,200–$2,500 |
| California King | 72" | 84" | Taller individuals, narrow rooms | $1,300–$2,600 |
| Queen | 60" | 80" | Average master bedrooms, couples | $900–$1,800 |
| Full (Double) | 54" | 75" | Single sleepers, guest rooms | $700–$1,400 |
| Twin | 38" | 75" | Kids, small guest rooms | $500–$1,000 |
* Prices are approximate and may vary by brand, materials, and retailer.
Top-Rated King Beds with Mattress
Based on thousands of customer reviews and expert testing, these are the best king size beds for sale with mattress currently available. Each set includes a durable bed frame and a high-quality mattress designed for comfort, support, and durability.
Best King Bed & Mattress Sets
⚠️ AFFILIATE DISCLOSURE: This website contains affiliate links. As an Amazon Associate, we earn from qualifying purchases. If you make a purchase through these links, we may receive a small commission at no additional cost to you. Read our full affiliate policy.
King Size Mattress, 14 Inch Hybrid King Mattress in a Box, Medium Firm Memory Foam Mattress, with Individual Pocket Springs, Upgrade Zoned Support, Motion Isolation&Pressure Relief, CertiPUR-US
SUQGUT 12 Inch King Size Mattress, Plush Hybrid Mattress in a Box, Individual Pocket Coils for Pressure Relief, CertiPUR‑US Certified, Vacuum‑Compressed, Fits King Bed Frame, Dimensions: 76" x 80"
King Size Mattress, 12 Inch Hybrid King Mattress in a Box, Medium Firm, Memory Foam & Pocketed Springs, Pressure Relief, CertiPUR-US Certified& Fiberglass Free, Motion Isolation, 365-Night Trial
(Luxury Hotel) 16 Inch King Size Hybrid Mattress in a Box, Medium Firm
King Size 12 Inch Hybrid Mattress, Medium Firm Pocket Spring Mattress in a Box, Breathable Pressure Relief, CertiPUR-US Certified Foam, Convenient Bed in a Box Delivery
PCUKEM King Size Mattress, 12 Inch King Mattress in a Box, Cooling Gel Memory Foam Hybrid Mattress with Pocketed Coils, Medium Firm Feel, CertiPUR-US Certified, Pressure Relief, Motion Isolation
King Mattress 14 Inch, Luxury Hotel Cooling Hybrid Bed Mattress in a Box
EGOHOME King Size Memory Foam Mattress 12 Inch, Green Tea, Medium Firm
Frequently Asked Questions About King Beds
What is the difference between a king and a California king?
A standard king (76" × 80") is wider but shorter than a California king (72" × 84"). Choose a standard king for more width (great for couples) and a California king if you're taller or have a narrower bedroom. Both are king size beds for sale with mattress options you'll commonly find.
Can I use a king mattress with an adjustable bed frame?
Yes! Many king mattresses are compatible with adjustable bases, especially memory foam and hybrid models. Look for "adjustable-friendly" labels. If you need a frame, see our adjustable beds with heat and massage guide.
How much does a king bed with mattress cost?
A quality king size bed with mattress included typically ranges from $1,200 to $2,500 for a complete set. Budget options start around $800, while luxury sets with premium materials can exceed $3,000.
What's the best mattress type for a king bed?
It depends on your sleep style:
Memory Foam: Great for pressure relief and motion isolation.
Hybrid: Combines support and breathability – a popular choice.
Innerspring: Offers traditional bounce and edge support.
Latex: Durable, responsive, and eco-friendly.
Do I need a box spring for a king bed?
Not necessarily. Many modern bed frames and platforms support king mattresses without a box spring. Check your frame's specifications. If you prefer extra height, a low-profile box spring or a platform bed with drawers can be a stylish alternative.
Ready to Upgrade Your Sleep?
Browse our curated selection of king size beds for sale with mattress and find the perfect match for your comfort and style. Every purchase supports our mission to help you sleep better.
View All King Bed Sets