Mattress Size Calculator

Free tool

Tell us how many people will sleep on the mattress and, optionally, your room width, to see which sizes fit with enough clearance on the sides. Includes an always-visible EU/UK/US conversion table.

People sleeping on the mattress

Recommended sizes

Choose how many people will sleep on the mattress and press "Calculate" to see the options.

EU / UK / US size conversion table

Approximate commercial names - they vary by manufacturer.

EU (cm)UK nameUS name
90×190 cmSingleTwin
105×190 cmSmall DoubleTwin XL
135×190 cmDoubleFull
150×200 cmKingQueen
160×200 cmKing (ancho)Queen (ancho)
180×200 cmSuper KingKing