What Size Is A King Pillow Case

If you’re buying new bedding, you might be wondering what size is a king pillow case. It’s a common question, as getting the right fit is key for both looks and comfort. A standard king pillow case is designed to fit a king-size pillow, which is larger than standard or queen options.

Using the wrong size case can lead to a sloppy look or even damage your pillows. This guide will give you all the details you need, from exact dimensions to shopping tips.

A standard king pillow case measures 20 inches by 36 inches (51 cm by 91 cm). This size is meant to hold a king pillow insert, which typically measures 20 inches by 36 inches. The case is usually cut slightly larger to allow for the pillow’s loft and a neat closure.

It’s important to note that dimensions can vary slightly by brand or region. Always check the product label before you buy to ensure a perfect fit.

King vs. Standard Queen Pillow Cases

Mixing up king and queen sizes is easy. Here’s how they differ:

King Pillow Case: 20″ x 36″ (51 x 91 cm). Longer and narrower.
Standard/Queen Pillow Case: 20″ x 26″ (51 x 66 cm). Shorter in length.

A king case on a queen pillow will be very baggy, while a queen case on a king pillow won’t close properly. Knowing this difference saves you from a frustrating mismatch.

Other King-Size Variations

Beyond the standard king, you might encounter other terms.

European King Pillow Cases

In European or UK sizing, a king pillow case is often larger. A common size is 20 inches by 40 inches (50 x 80 cm). Always verify if you’re purchasing internationally or from a brand that uses European sizing.

California King Pillow Cases

A California king bed is longer but narrower than a standard king bed. However, the pillows are usually the same standard king size (20″ x 36″). The bedding focus for a California king is on the longer sheets, not the pillowcases.

How to Measure Your Pillow for a Case

If your pillow is old, non-standard, or you’ve lost the tag, follow these steps to measure it.

Lay the pillow flat on a surface.
Use a fabric measuring tape for accuracy.
Measure the width from one seam to the other.
Measure the length from the opposite seams.
Note the thickness (loft) by measuring the depth when laying flat.

Add 2-3 inches to both the length and width to find your ideal case size. This accounts for the pillow’s fullness.

Pillow Case Closure Types

The closure style affects how the case looks and holds the pillow.

Housewife (Closed): A simple envelope fold. Looks neat but can be trickier to insert the pillow.
Oxford (Flanged): Has a decorative border (flange) around the edge. Offers a more formal, luxurious appearance.
Zipper Closure: Less common, but provides a very secure closure that hides the pillow completely.

Most king pillow cases use the housewife or oxford style. The choice is mostly about your aesthetic preference.

Material and Fabric Choices

The fabric impacts feel, durability, and care. Here’s a breakdown of popular choices:

Cotton (Percale & Sateen)

Cotton is the most common choice. Percale offers a crisp, cool feel, while sateen has a smoother, silkier feel with a slight sheen. Both are breathable and durable.

Linen

Linen is highly breathable and gets softer with each wash. It has a distinctive, relaxed texture that’s great for temperature regulation. It does wrinkle easily, which is part of it’s charm.

Bamboo or Tencel™

These are known for being incredibly soft and moisture-wicking. They are often a good choice for those with sensitive skin or who sleep hot.

Silk or Satin

Silk and satin cases are gentle on hair and skin, reducing friction. They can help prevent sleep creases and hair frizz. They require more delicate care than cotton.

Step-by-Step: Buying the Right King Pillow Case

Confirm Your Pillow Size: Check the label or measure your pillow. Ensure it is indeed a king size (20″x36″).
Check Your Set: If buying a replacement, match the color and material of your existing sheets if you want a uniform look.
Read Product Descriptions: Online, always scroll to the product details or specs to see the listed dimensions.
Consider Material Needs: Think about your priorities: cooling, softness, easy care, or hair/skin benefits.
Read Reviews: Look for comments about sizing accuracy, shrinkage after washing, and fabric quality.
Buy Extras: It’s wise to buy at least one extra pillow case per pillow. This extends the life of your set and gives you a spare during laundry day.

Common Sizing Mistakes to Avoid

Assuming “King” is Universal: As mentioned, double-check between standard and European king sizes.
Forgetting About Shrinkage: Natural fabrics like cotton and linen can shrink. Consider pre-shrunk options or size up slightly if you dry with high heat.
Ignoring Pillow Loft: Very thick, plush pillows might need a “deep pocket” pillow case for a comfortable fit.
Mixing with “King Size” Bed Sets: A king-size sheet set comes with king pillow cases. A queen set comes with standard/queen cases. Make sure your set matches your bed.

Care and Maintenance for Longevity

Proper care keeps your pillow cases looking and feeling great.

Wash before first use to remove any manufacturing residues and soften the fabric.
Follow the care label instructions. Use mild detergent.
Wash with similar colors to prevent dye transfer.
Tumble dry on low heat to minimize shrinkage and wear. Removing them slightly damp can reduce wrinkles.
Iron on the appropriate fabric setting if you prefer a crisp look.
Rotate your pillow cases regularly with your spares to ensure even wear and tear over time.

Styling Your Bed with King Pillows

King pillows make a bold statement on a bed. Here are some common styling approaches:

The Standard Set: Two king pillows in cases that match your sheet set, placed flat against the headboard.
The Layered Look: Two king pillows at the back, with two standard or euro pillows in front of them. This adds depth and luxury.
Color and Pattern: Use pillow cases to introduce an accent color or pattern that complements your duvet cover or blanket.
Texture Mixing: Pair a crisp percale sheet set with linen or velvet pillow cases for visual interest.

The key is balance. King pillows are large, so to many patterns or colors can make the bed look busy.

FAQ Section

Is a king pillow case the same as a standard one?

No, they are different sizes. A standard/queen pillow case is 20″ x 26″. A king pillow case is longer, at 20″ x 36″.

What are the dimensions of a king size pillow case?

The standard dimensions for a king pillow case are 20 inches wide by 36 inches long (51 cm x 91 cm).

How big is a king pillow?

A standard king pillow is 20 inches by 36 inches. The pillow case is made to fit this dimensions with a little extra room for the closure.

Can I use a queen pillow case on a king pillow?

You cannot properly fit a queen case on a king pillow. The king pillow will be to long, causing the case to strain or not close, which can damage the seams.

Do all king beds use king pillows?

Typically, yes. Both standard (Eastern) king and California king beds use standard king-size pillows (20″x36″). The difference between the beds is in the mattress and sheet sizes, not the pillows.

Why does my new king pillow case feel tight?

It could be for a few reasons. Some fabrics have less stretch, your pillow might be very high-loft, or the case might have shrunk slightly if washed in hot water. Always check the specific dimensions of the case you bought.

Final Tips for a Perfect Fit

Knowing what size is a king pillow case is the first step to a well-made bed. Always remember to measure your pillow if your unsure, and pay close attention to product specifications when shopping. Investing in quality cases made from a fabric you love will improve your sleep experience and your bedroom’s aesthetics.

With the right care, a good set of king pillow cases can last for many years, providing comfort and style night after night. Don’t be afraid to mix and match once you understand the basic sizing rules.