Split King Mattresses Split King Mattresses

Split King Mattresses

Enjoy personalized comfort with our Split King Mattresses at Ortho Mattress. A split king mattress is made of two twin XL mattresses placed side by side, allowing each sleeper to choose their own comfort level—perfect for couples with different sleep preferences. Our split king mattresses for sale offer the same spacious feel of a king bed with added flexibility, especially when paired with an adjustable base.

    56% OFF
    FLOOR MODEL SALE!
    Black Hybrid CX-Class Plush
    Black Hybrid CX-Class Plush

    Luxury Plush

    Hybrid

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $1,699.99
    $3,899.99
    SHOP NOW
    $799 OFF
    ORTHOPLEX® TECHNOLOGY
    Ortho-Mattress_Astro-Medium
    Astro Medium

    Medium

    Memory Foam

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $2,769.99
    $3,569.98
    SHOP NOW
    $799 OFF
    ORTHOPLEX® TECHNOLOGY
    Ortho-Mattress_Astro-Soft
    Astro Soft

    Luxury Plush

    Memory Foam

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $2,769.99
    $3,569.98
    SHOP NOW
    60% OFF
    FLOOR MODEL SALE!
    Black L-Class Plush Pillow Top
    Floor Model Black L-Class Plush Pillow Top

    Luxury Plush

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $1,299.99
    $3,299.99
    SHOP NOW
    $300 OFF
    NEW!
    Beautyrest_Series-One-Extra-Firm
    Black Series One Extra Firm

    Extra Firm

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $1,249.00
    $1,549.00
    SHOP NOW
    $300 OFF
    NEW!
    Beautyrest_Series-One-Medium
    Black Series One Medium

    Medium

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $1,549.00
    $1,849.00
    SHOP NOW
    $300 OFF
    NEW!
    Beautyrest_Series-One-Medium-Pillow-Top
    Black Series One Medium Pillow Top

    Medium

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $1,849.00
    $2,149.00
    SHOP NOW
    $300 OFF
    NEW!
    Beautyrest_Series-Two-Firm
    Black Series Two Firm

    Firm

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $2,049.00
    $2,349.00
    SHOP NOW
    $300 OFF
    NEW!
    Beautyrest_Series-Two-Medium-Pillow-Top
    Black Series Two Medium Pillow Top

    Medium

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $2,249.00
    $2,549.00
    SHOP NOW
    $600 OFF
    NEW!
    Black Series Three Medium Pillow Top
    Black Series Three Medium Pillow Top

    Medium

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $2,849.00
    $3,449.00
    SHOP NOW
    $600 OFF
    NEW!
    Beautyrest_Series-Three-Medium
    Black Series Three Medium

    Medium

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $2,449.00
    $3,049.00
    SHOP NOW
    $600 OFF
    NEW!
    Beautyrest_Series-Three-Firm
    Black Series Three Firm

    Firm

    Innerspring

    Adjustable Compatible

    Firm
    Soft
    Starting at
    $2,449.00
    $3,049.00
    SHOP NOW

FAQs About Split King Mattresses

What is a Split King mattress?

A Split King mattress is made of two Twin XL mattresses placed side by side. Each Twin XL measures 38" x 80", so together they match the size of a standard King mattress, which is 76" x 80". This setup gives each person their own sleep surface with the same overall space as a King.

How does a Split King mattress work?

Each side of a Split King can move independently—perfect for adjustable bed frames. You and your partner can each choose your preferred firmness or position.

How do you keep Split King mattresses together?

You can use a non-slip mattress connector strap or a fitted King-size mattress pad or sheet set to help hold the two Twin XL mattresses in place.

Are Split King mattresses comfortable?

Yes! They’re just as comfortable as a regular King, with the bonus of custom comfort for each person.

Is a Split King mattress the same as two Twins?

Not exactly. A Split King uses two Twin XL mattresses, which are 5 inches longer than standard Twins. Regular Twin mattresses won’t equal a true King size.