What Are The Measurements Of a California King Mattress? Size, Fit, and FAQ
If you’re asking “What Are The Measurements Of a California King Mattress”, you’re likely trying to confirm whether this extra-long mattress will fit your bedroom, your bed frame, or your height. This guide explains the exact dimensions, how a California king compares to other mattress sizes, and what to consider before choosing one.
What Are The Measurements Of a California King Mattress?
A standard California king mattress measures approximately 72 inches wide by 84 inches long.
In metric terms, that’s about 183 cm x 213 cm.
So, in simple terms:
- Width: 72" (about 6 feet)
- Length: 84" (about 7 feet)
These are the typical industry dimensions for a California king, though there can be very small variations from one manufacturer to another.
How Is a California King Different From a Regular King?
Many people searching for “What Are The Measurements Of a California King Mattress” are trying to compare it to a standard king.
Here’s a simple comparison:
| Mattress Size | Width (in) | Length (in) | Best For |
|---|---|---|---|
| King | 76" | 80" | Couples wanting maximum width |
| California King | 72" | 84" | Taller sleepers wanting extra legroom |
Key differences:
- A standard king is wider (76" vs 72").
- A California king is longer (84" vs 80").
- Total surface area is similar, but the shape is different:
King = wider rectangle, California king = longer rectangle.
Who Is a California King Mattress Best For?
Because of its extra length, a California king often appeals to:
- Taller sleepers who find their feet hanging off shorter mattresses.
- Couples who prefer more legroom and don’t mind slightly less width.
- Bedrooms that are longer than they are wide, where a narrow-but-long mattress fits the layout better.
However, those who want maximum shoulder-to-shoulder space may prefer a standard king instead.
Will a California King Fit My Room?
Knowing what are the measurements of a California king mattress is only part of the equation—you also need to see how it fits in your space.
A California king mattress is:
- 6 feet wide
- 7 feet long
To check your room:
- Measure the floor area where the mattress will go.
- Leave walking space around the sides and foot of the bed.
- Consider doors, closets, windows, dressers, and any tight corners.
Many people find that having about 2–3 feet of clearance around at least two sides of the bed helps the room feel comfortable to move in.
Do I Need Special Bedding and a Special Bed Frame?
Bed Frames and Bases
Because of its unique length and width, a California king generally needs:
- A California king–specific bed frame or base
- A compatible foundation, platform, or adjustable base that lists “California King” as a supported size
A standard king frame usually will not fit a California king mattress correctly due to the different proportions.
Sheets and Accessories
You’ll typically need:
- California king fitted sheets (cut for 72" x 84")
- A California king mattress protector or pad
- Top sheets, blankets, and comforters sized for California king, or oversized king bedding that clearly lists compatible dimensions
Using standard king bedding on a California king may result in a poor fit—often too short at the foot of the bed.
Common Questions About California King Measurements
Is a California King the Biggest Mattress Size?
A California king is one of the largest standard mattress sizes, but it is not strictly “bigger” than a regular king—just shaped differently. It is longer but narrower.
Will a California King Fit Two People Comfortably?
Many couples sleep comfortably on a California king. The width per person is slightly less than a standard king, but still more than many smaller sizes. Those who value legroom over width may find it especially suitable.
Can I Use a California King Mattress on a King Platform?
In most cases, no. A platform designed for a standard king is usually built to 76" x 80". A 72" x 84" mattress will either:
- Overhang at the ends, or
- Leave gaps along the sides
Both situations can affect stability and may not be recommended by manufacturers.
What Should I Consider Before Choosing a California King?
When you’re exploring “What Are The Measurements Of a California King Mattress”, keep these points in mind:
- Your height: Taller sleepers often benefit from the 84" length.
- Room shape: Longer rooms usually work well with a California king.
- Existing furniture: Check if nightstands, dressers, and pathways still work with a 7-foot-long mattress.
- Availability of accessories: Make sure California king sheets and frames are easy to find in your area.
✔️ Quick Mattress Takeaways
Key points to remember about “What Are The Measurements Of a California King Mattress”:
- Standard size: About 72" wide x 84" long (183 cm x 213 cm).
- Shape:Narrower and longer than a standard king.
- Best suited for:
- Taller sleepers needing more legroom
- Couples who value length over extra width
- Bedrooms that are longer rather than wider
- Requires matching gear:
- California king–specific frame or base
- California king sheets, protectors, and bedding
- Room planning: Measure your space and leave comfortable walking clearance around the bed.
Understanding what are the measurements of a California king mattress makes it much easier to decide if this extra-long size is a good fit for your body, your bedroom, and your everyday comfort.
