Which Mattress Size Should You Choose

Mattress Size

Twin mattress or queen mattress? Choosing the right-sized mattress for you sounds like a simple-enough task, but the problem is it isn’t, and it can even lead to pointless headaches down the road. So, before you buy your next mattress, let’s clear up a few things and make sure you’re making the perfect choice for you!

  • Mattress size definition vary around the world
  • Choose carefully to avoid issues with sheet and bed-sizes
  • Protect yourself: Buy from a reputable manufacturer with a generous return policy

The Definition of Mattress Size Changes Around the World

The definition of the various mattress sizes, such as twin, full, queen and king, are defined slightly differently around the world. The differences aren’t too major in most cases, mind you, but it could lead to some inconvenience in the future, especially when it comes to the big differences between Queen, King and Super King sizes across regions. To make things easy, we’ve compiled a handy table that includes all sizes and their specific dimensions across North American, U.K. and Europe.

 SingleKing SingleDouble/FullQueenKingSuper King
North America

97 x 191 cm

37 x 75 in

97 x 203 cm

38 x 80 in

137 x 191 cm

54 x 75 in

152 x 203 cm

60 x 80 in

193 x 203 cm

76 x 80 in

Size N/A in Region

90 x 190 cm

35 x 75 in

120 x 190 cm

47 x 75 in

135 x 190 cm

53 x 75 in

Size N/A in Region

150 x 200 cm

59 x 79 in

180 x 200 cm

71 x 79 in


90 x 200 cm

35 x 79 in

120 x 200 cm

47 x 70 in

140 x 200 cm

55 x 79 in

Size N/A in Region

160 x 200 cm

63 x 79 in

180 x 200 cm

71 x 79 in


Choose the Right Mattress Size & Avoid a Future Headache

Since mattress dimensions vary across regions, you need to make sure that your queen bed fits the new queen mattress you just bought. This is also true for sheets, blankets and mattress toppers, so pay close attention if you want to avoid accidentally buying the wrong size.

Pro Tip: Keep a small note pinned to your mattress with its exact dimensions.


Protecting Yourself from Any Mistakes

We’d never order the wrong-sized mattress, right? Well mistakes DO happen, and in this case, you want to make sure that you have a good return policy and acceptable shipping charges on your perfectly-sized mattress. Some manufacturers offer up to whole year of trial, giving you 365 nights to ensure you got the right mattress. Furthermore, some manufacturers may offer free shipping and returns, but would hesitate to charge extra if the mattress requires white-glove handling. Check out our reviews to make sure you know exactly what you’re getting.