Pillowcase Sizes Across English-Speaking Markets

A region is not a standard

Retailers use familiar names to organise shelves, but a name is not a guaranteed finished size. The examples below come from named retailers in all five markets and illustrate the variation. Even two New Zealand standard listings can differ by a centimetre. Compare a measurement on the product page or packaging with the pillow you own.

A UK standard case often measures 50 × 75 cm (about 19.7 × 29.5 in), while a US queen example measures 20 × 30 in (about 50.8 × 76.2 cm). The similar figures do not prove interchangeable fit: opening, seam allowance and pillow loft still matter.

Measure for usable space

Lay the pillow flat and record its widest length and width without aggressively compressing it. Note loft at the centre. Compare this with the maker’s stated finished case dimensions and fit recommendation. A decorative border on an Oxford-style case is outside the usable inner compartment unless specified otherwise.

For an envelope closure, check overlap length. For a zipper, check opening width and whether hardware is covered. If the case may shrink under its permitted wash, use the maker’s expected after-wash size rather than an unsupported universal allowance.

If the labels disagree

Ask the seller whether dimensions are for the pillow, the case before washing, or the finished usable compartment. Confirm whether the listed width includes a border. A case can have the right headline size and still have a narrow opening or poor loft fit.

When buying from another country, convert the actual dimensions rather than matching a regional name. 1 inch equals 2.54 centimetres. A calculator is unnecessary if the maker already supplies both measurements.

Use the table as a starting point

The comparison table gives illustrative retail dimensions, not legal standards for each country. Where a reliable country-wide convention is absent, the cell explicitly asks you to check the individual listing. This protects against false precision.

• Measure pillow length, width and loft
• Find finished case dimensions
• Check usable area and opening
• Read maker’s shrinkage or wash guidance

What the table can and cannot tell you

These sourced retail examples are not interchangeable national standards. Even New Zealand standard listings can differ by a centimetre in length. A Canadian or New Zealand purchase still needs the exact maker’s dimensions. Measure the pillow and compare the actual listing.

Avoid a name-to-name conversion

A US queen label, UK standard label and Australian standard label can point to similar but non-identical dimensions. They are retailer examples, not a table of legal equivalents. Canada and New Zealand also contain brand variation. Always compare the numbers on the specific item and confirm whether they refer to the pillow, finished case or decorative outer border.

When converting, multiply inches by 2.54 to get centimetres and divide centimetres by 2.54 to get inches. Round only after comparing the maker’s fit allowance. A few centimetres can affect an envelope overlap or a high-loft pillow even if the nominal name sounds compatible.

A fit check with two layers

Measure the pillow first, then consider whether a protector is already on it. A thick pillow plus protector may need more usable case space than a flat pillow of the same face dimensions. Check opening width for zippers and usable inner length for envelopes, rather than relying on the outer seam-to-seam measure.

If the product listing offers only a regional name, ask for finished dimensions and after-wash fit guidance. If the seller cannot provide them, the uncertainty is a purchase risk. This page deliberately avoids inventing a universal size for every country or brand.