what size is a standard pillow

A standard pillow measures 20 inches by 26 inches (51 x 66 cm) . It is designed to fit three pillow sizes: Standard, Super Standard, and Queen. A standard pillow fits well on a twin or full-size mattress, and two standard pillows will sit nicely side by side on a full or queen size bed. It takes three standard pillows to cover the span of a king-size mattress. Standard size pillowcases are the most widely purchased by consumers and fit both standard and queen size pillows. The extra material on one side of a standard pillowcase size makes up for the longer length of a queen pillow while still looking fancy enough.