The standard pillow size in the United States is 20 inches wide by 26 inches long, though "standard" varies by region and use case. This is the most common size found in households and hotels, fitting standard pillowcases and bed frames.
Other widely recognized pillow sizes include queen (20 × 30 inches), king (20 × 36 inches), and body pillows (20 × 54 inches). European pillows tend to be square, typically 26 × 26 inches or 28 × 28 inches. Decorative pillows for couches and chairs vary widely, often ranging from 12 × 12 inches to 18 × 18 inches.
The choice of pillow size depends on bed dimensions, personal comfort, and regional conventions. A standard queen-size bed typically uses queen pillows, while king beds use king pillows. Some sleepers prefer the smaller standard size even on larger beds for comfort or aesthetic reasons. Pillow height (loft) is a separate consideration from length and width, typically ranging from 3 to 7 inches depending on sleeping position and fill material.
When purchasing pillows, checking both the pillow dimensions and the corresponding pillowcase size ensures a proper fit.