Silk Pillowcase Size Guide: Standard, Queen or King?

You need a silk pillowcase that matches your pillow, not your bed. Standard US pillows are 20 x 26 inches, queens 20 x 30 and kings 20 x 36. Measure your pillow seam to seam. With a zippered silk case, the closer the match, the less loose silk bunches under your face.

Picture the moment. A new silk pillowcase arrives. You unzip it, slide the pillow in, and four inches of empty silk flop past the end. Or the opposite: the pillow is in, the zipper stops a hand's width short, and you're pressing the pillow flat with one arm while you tug with the other.

I know that flap of silk well. During chemo I used a cheap, standard-size "silk" pillowcase on a tiny half-size pillow. I folded the extra half under, or left it hanging when I was too sick to fold it. It's worn thin and coming apart now, and I still have it. You shouldn't have to improvise.

Most of us have never measured a pillow. We buy cases by the size of the bed, and the pillows came from somewhere years ago. Two minutes with a tape measure fixes that for good. Here's how to get the size right the first time.

What size silk pillowcase do I need?

The one that matches your pillow. Pillow size and bed size are separate things: plenty of people put standard pillows on a king bed, or queen pillows on a full. Buy for the pillow, not the bed.

The Sleep Foundation lists these common US pillow sizes, and Amerisleep adds the in-between "super standard":

Centimeters are converted at 2.54 cm per inch. Many listings round them, so you'll often see a queen written as 51 x 76 cm.

Notice that standard, queen and king pillows are all 20 inches wide. Only the length changes. So when you compare cases, the length is the number that matters most.

European sleeping pillows are a different system. Amerisleep notes that a European standard pillow (60 x 80 cm) is much larger than a US standard, so US and European cases aren't interchangeable. If your pillows came from abroad, measure before you assume.

How do I measure my pillow?

It takes two minutes and a tape measure.

1. Take the pillow out of its case. Measure the pillow itself, not the case it is in.
2. Lay it flat and fluff it. Casper recommends measuring with the pillow fully fluffed, not compressed.
3. Measure the length along the edge, seam to seam. Boll & Branch suggests measuring from inside seam to inside seam, along the bottom edge rather than across the puffy center, for a more accurate number.
4. Measure the width the same way.
5. Round up. Amerisleep advises rounding a partial measurement up to the nearest whole inch.
6. Compare to the chart. About 26 inches long is a standard, about 28 a super standard, about 30 a queen, about 36 a king.
7. Write it down. Put each pillow's size in your phone's notes, so the next time you shop you never have to guess.

If you have a stiff carpenter's tape, use it. Amerisleep prefers a rigid tape to a soft tailor's tape, and recommends measuring along the sides, not diagonally or across the middle.

Can I put a queen pillowcase on a standard pillow?

You can. It just won't be snug.

A queen case is 30 inches long and a standard pillow is 26, so there's roughly four inches of extra case at one end. Boll & Branch says a standard pillow fits most snugly in a standard case, and that queen or king cases will work but "hang very loosely."

With a cotton envelope case, that extra length usually tucks out of sight. With a zippered silk case, it's different. The zipper closes the end, so the extra few inches of silk sit loose at the end of the pillow. Silk is slippery and drapes easily, and loose silk can bunch and crease under you as you move.

So: a standard pillow in a queen zippered case is OK. It isn't ideal.

Can I put a queen pillow in a standard pillowcase?

Often, yes, with cotton. The Sleep Foundation says standard cases can fit a queen pillow, and notes that doing so "can increase its loft and firmness." Amerisleep says queen pillows will look slightly loose in a standard case.

With a zippered silk case, I'd be more careful. A zipper doesn't stretch. If the pillow is longer than the case, you may be fighting the zipper every wash day, and a case that's strained at the seams isn't one I'd expect to wear well. That's a practical judgment, not a tested claim, but it's why I'd rather match sizes.

King pillows are simpler: the Sleep Foundation says a king pillow only fits king pillowcases.

Why does a snug fit matter more for silk?

Casper's pillowcase guide puts it plainly: a properly sized case should fit the pillow snugly so it doesn't slip out or bunch up during the night.

That's true of any fabric, but silk makes it more noticeable. Charmeuse is smooth and fluid. It's why silk glides under your hair instead of catching. The same quality means slack fabric moves easily, and a fold of loose silk under your cheek is still a fold.

A snug fit keeps the silk flat and smooth where your face and hair actually rest. It's also part of why we chose a hidden zipper over an envelope closure. Our post on zipper vs envelope goes deeper on closures.

Fit is about comfort and keeping the surface smooth. It's not a health claim. If you're managing a skin or hair condition, talk with your dermatologist or care team about what's right for you.

What if my pillow is between sizes?

Pillows aren't always exact. Here's how I'd decide.

• Round up, as the measuring guides suggest. A case slightly long is easier to live with than a case too short to zip.
• A pillow that measures about 28 inches is a super standard. Boll & Branch says super standards fit standard, super standard or queen cases, with standard the tightest. For a zippered silk case, queen is the comfortable choice.
• A thick or overfilled pillow may need a little more room. Casper notes thickness matters too, and some cases have deeper pockets for thicker pillows.
• If you're choosing new pillows anyway, pick the size of the case you love. Matching the pillow to the case is easier than the other way around.

Once it fits, care keeps it that way. Wash it with the zipper closed and air dry it. Our guide on how to make a silk pillowcase last longer has the full routine.

Where Wink stands

We all deserve to know exactly what we're sleeping on for eight hours a night. That includes whether it will fit.

Right now we make one size: Queen. Our product pages describe it as "Queen only for now, fitting a standard queen pillow," and that's what both pillowcases are: the single-layer Douceur™ ($185) and the double-layer Douceur Doublure™ ($245), both 25 momme, Grade 6A, 100% mulberry silk in Performance Luxury Silk™ with a hidden zipper. Douceur Doublure is our founding edition of 330 hand-numbered pieces, and it will never be restocked.

I'd rather you hear this from me than find out on your pillow: if your pillows are standard, our case will fit, but with a few inches of loose silk at the end. If your pillows are king, it won't fit. We don't make standard or king yet.

If the fit isn't right, the risk sits with us. You have 30 days from delivery to return it, used or not. Returns are free and you get a full refund. You can cancel for a full refund any time before it ships. Shipping is free within the US, and your ship date is confirmed by email after purchase.

Both are crafted by a GOTS & OEKO-TEX certified silk house (GOTS license 00284622; OEKO-TEX Standard 100 certificate 22.HCN.30712, Product Class I), and you can look up both numbers on our certifications page. Wink Silk is pursuing its own GOTS Trader and OEKO-TEX certifications. Whether silk is worth it for you at all is its own question, covered in is a silk pillowcase worth it.

Wink Privé opens November 2, three days before everyone else, ahead of the public launch on November 5, 2026. If you sleep on queen pillows, join Wink Privé for first access to the founding pieces.

Wink. The brand that shows you the certificates.

Sleep beautifully.

Sources

• Pillow Sizes & Dimensions: Sleep Foundation
• Opened, not linked (bedding retailers, per Wink link policy): Amerisleep, Pillow Sizes: Shopping Guide and Chart (2026); Casper, Pillowcase Size Chart & Dimensions Guide; Boll & Branch, Pillow Size and Dimension Guide
• Douceur: Wink Silk
• Douceur Doublure: Wink Silk
• FAQ: Wink Silk

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