How to Choose the Right Silk Pillowcase Size: Standard vs Queen vs King
Buying the wrong size pillowcase is one of the most avoidable purchasing mistakes. A pillowcase that does not fit your pillow properly bunches, slides, and creates the mechanical friction you were trying to eliminate by switching to silk. Here is a clear breakdown of sizes so you get it right the first time.
The Three Standard Pillowcase Sizes
Standard
Standard pillowcases measure approximately 50 x 66 cm (20 x 26 inches). They are designed to fit standard and super-standard pillows. Standard is the most common pillow size in North America and the UK, and the right choice for most single sleepers and anyone who is not sure what size their pillow is.
Queen
Queen pillowcases measure approximately 50 x 76 cm (20 x 30 inches). They are slightly longer than standard and fit both standard-sized pillows with extra material and queen-sized pillows (which are longer than standard). Queen is the most popular choice for most adult beds and the size most commonly sold in premium bedding.
The Sillo Queen 2-pack at $99.99 USD ($129.99 CAD) is the most popular size and the one most customers default to correctly.
King
King pillowcases measure approximately 50 x 91 cm (20 x 36 inches). They are designed for king-sized pillows, which are longer than standard or queen. If you sleep in a king-sized bed with matching king pillows, or if you prefer a longer pillow, king is the right size.
The Sillo King 2-pack is $109.99 USD ($149.99 CAD), both including the Care Washbag.
How to Know Which Size You Need
Check your current pillowcase label
Your existing pillowcase will have a size label. Match that size when buying silk. If the label has worn off, measure your pillow.
Measure your pillow
Lay your pillow flat and measure the length and width. Under 66 cm long: standard. Between 66 and 76 cm: queen. Over 76 cm: king. Width is consistently around 50 cm for all three standard sizes.
When in doubt, go Queen
Queen fits standard pillows with a small amount of extra fabric and will fit queen pillows correctly. It is the most versatile size and the right default if you are unsure.
Does Size Affect the Skin and Hair Benefits?
The benefits of silk, friction reduction, moisture retention, silver ion antibacterial protection, are present in all sizes equally. What matters is that the pillowcase fits your pillow correctly. A too-small case bunches and creates friction points. A too-large case can slide off or bunch at the edges. Correct fit means the silk surface is flat and consistent against your face throughout the night.
The 2-Pack: Why It Matters Regardless of Size
The Sillo 2-pack comes in both Queen and King. The AAD recommends washing pillowcases one to two times per week for skin health. With one pillowcase, washing creates a gap. Two pillowcases eliminates that gap: one washes and air dries while you use the other. This is true for both sizes.
Frequently Asked Questions
What size silk pillowcase fits a standard pillow?
Both standard and queen fit a standard pillow. Queen will have slightly more fabric and sit more generously on the pillow. Either works.
What size silk pillowcase fits a king bed?
A king-sized bed typically has king-sized pillows, which require a king-sized pillowcase. Confirm by measuring your pillow (approximately 50 x 91 cm for king).
Can I use a queen pillowcase on a standard pillow?
Yes. The extra length will be tucked under the pillow. It works fine and is a common choice.
What size does Sillo offer?
Sillo offers Queen and King, both as 2-packs with the Care Washbag included. See both sizes here.
The Wrap Up!
Queen for most people. King if you have king-sized pillows. When in doubt, measure your pillow length: under 66 cm is standard (queen fits), over 76 cm is king. Getting the size right means the silk surface stays flat and consistent against your face all night, which is where all the benefits actually live. Sillo offers Queen and King 2-packs, both with Care Washbag included.
