Pillow Size Guide: Standard, Queen & King

Pillow sizes can be surprisingly confusing because the same name — standard, queen, or king — can mean different dimensions depending on whether you shop in the US, UK, or EU. A US standard pillow is 20 by 26 inches, a UK standard is 20 by 30 inches, and EU pillows are often measured in centimeters. Our Pillow Size Converter helps you match pillow dimensions across all three systems so you never buy the wrong size again.

Standard vs Queen vs King Pillow Dimensions

Standard pillows measure 20 by 26 inches (51 by 66 cm) and fit twin and full beds. Queen pillows are the same width but longer at 20 by 30 inches (51 by 76 cm), designed for queen beds where the pillow spans slightly wider. King pillows are 20 by 36 inches (51 by 91 cm) and are meant for king beds, often using two in a row or one across the full width. The Pillow Size Converter shows the exact dimensions in both imperial and metric units.

EU and UK Pillow Size Variations

UK standard pillows are typically 20 by 30 inches (51 by 76 cm), which matches US queen size rather than US standard. EU pillows often use 40 by 40 cm (16 by 16 inches) travel pillows, 50 by 60 cm (20 by 24 inches) standard, and 50 by 70 cm (20 by 28 inches) queen. European square pillows at 65 by 65 cm (26 by 26 inches) are popular for decorative bed styling rather than sleeping. Always verify which system a pillow is sold in before assuming the name matches your existing bedding.

Choosing the Right Pillow for Your Sleep Position

Pillow size is not just about bed dimensions — your sleeping position determines the ideal loft and firmness. Side sleepers generally need a thicker, firmer pillow (queen or king size) to fill the gap between ear and shoulder. Back sleepers need medium loft (standard or queen). Stomach sleepers need the thinnest pillow possible, often a standard or even a toddler pillow, to avoid neck strain.