What size pillow should you get if you have a Single Bed? Rebecca L February 12, 2020 16:59 Updated Follow A standard sized pillow, measuring 50cm x 75cm is best for a single bed. Shop all our pillows. Related articles What size pillow should you get if you have a Cot Bed? What is the ideal depth of pillow for a side sleeper? Depending on the filling, after how long should you change your pillow? Which pillow filling is best for a child? What size pillow should you get for a Toddler? Comments 0 comments Please sign in to leave a comment.