<P> Standard bed sizes are based on standard mattress sizes, which vary from country to country . Bed sizes also vary according to the size and degree of ornamentation of the bed frame . Dimensions and names vary considerably around the world, with most countries having their own standards and terminology . In addition, two mattresses with the same nominal size may still have slightly different dimensions, due to manufacturing tolerances, amount of padding, and support type . In almost all territories, standard beds are rectangular but other shapes, notably circular, may be obtained by special order . </P> <P> Modern manufacturing conventions have produced many standard mattress and box spring sizes . Beds vary by country of origin as per the table below . These dimensions are for the mattress--actual bed frames are a little larger to accommodate the mattress . Mattress thickness varies considerably . </P> <Table> <Tr> <Th> </Th> <Th> North America </Th> <Th> South America </Th> <Th_colspan="3"> Europe </Th> <Th_colspan="2"> Oceania </Th> <Th_colspan="4"> Asia </Th> </Tr> <Tr> <Th> US and Canada </Th> <Th> Brazil </Th> <Th> Continental Europe </Th> <Th> Scandinavia </Th> <Th> UK and Ireland </Th> <Th> Australia </Th> <Th> New Zealand </Th> <Th> China </Th> <Th> Japan </Th> <Th> Singapore </Th> <Th> Thailand </Th> </Tr> <Tr> <Th> Small single or Cot </Th> <Td> 76 cm × 191 cm (30 in × 75 in) </Td> <Td> </Td> <Td> 80 cm × 190 cm (31 in × 75 in) </Td> <Td> </Td> <Td> 60 cm × 190 cm (24 in × 75 in) </Td> <Td> </Td> <Td> </Td> <Td> 91 cm × 188 cm (36 in × 74 in) </Td> <Td> 85 cm × 195 cm (33 in × 77 in) </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> Single, Twin, or Bunk </Th> <Td> 97 cm × 191 cm (38 in × 75 in) </Td> <Td> 88 cm × 188 cm (35 in × 74 in) </Td> <Td> 90 cm × 200 cm (35 in × 79 in) </Td> <Td> 90 cm × 200 cm (35 in × 79 in) </Td> <Td> 90 cm × 190 cm (35 in × 75 in) </Td> <Td> 92 cm × 188 cm (36 in × 74 in) </Td> <Td> 91 cm × 188 cm (36 in × 74 in) </Td> <Td> 106 cm × 188 cm (42 in × 74 in) </Td> <Td> 97 cm × 195 cm (38 in × 77 in) </Td> <Td> 91 cm × 191 cm (36 in × 75 in) </Td> <Td> 107 cm × 198 cm (42 in × 78 in) </Td> </Tr> <Tr> <Th> Twin extra long </Th> <Td> 97 cm × 203 cm (38 in × 80 in) </Td> <Td> </Td> <Td> 90 cm × 210 cm (35 in × 83 in) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 91 cm × 203 cm (36 in × 80 in) </Td> <Td> </Td> <Td> 97 cm × 205 cm (38 in × 81 in) </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> King single or Super single </Th> <Td> </Td> <Td> 96 cm × 203 cm (38 in × 80 in) </Td> <Td> 120 cm × 200 cm (47 in × 79 in) </Td> <Td> </Td> <Td> </Td> <Td> 107 cm × 203 cm (42 in × 80 in) </Td> <Td> 107 cm × 203 cm (42 in × 80 in) </Td> <Td> </Td> <Td> 110 cm × 195 cm (43 in × 77 in) </Td> <Td> 107 cm × 191 cm (42 in × 75 in) </Td> <Td> </Td> </Tr> <Tr> <Th> Small double or Three - quarter </Th> <Td> 120 cm × 190 cm (48 in × 75 in) </Td> <Td> </Td> <Td> </Td> <Td> 140 cm × 200 cm (55 in × 79 in) </Td> <Td> 120 cm × 190 cm (47 in × 75 in) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 122 cm × 195 cm (48 in × 77 in) </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> Full or Double </Th> <Td> 130 cm × 190 cm (53 in × 75 in) </Td> <Td> 138 cm × 188 cm (54 in × 74 in) </Td> <Td> 140 cm × 200 cm (55 in × 79 in) </Td> <Td> 180 cm × 200 cm (71 in × 79 in) </Td> <Td> 135 cm × 190 cm (53 in × 75 in) </Td> <Td> 138 cm × 188 cm (54 in × 74 in) </Td> <Td> 137 cm × 188 cm (54 in × 74 in) </Td> <Td> 152 cm × 188 cm (60 in × 74 in) </Td> <Td> 140 cm × 195 cm (55 in × 77 in) </Td> <Td> </Td> <Td> 122 cm × 198 cm (48 in × 78 in) </Td> </Tr> <Tr> <Th> Double extra long </Th> <Td> 130 cm × 200 cm (53 in × 80 in) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 140 cm × 205 cm (55 in × 81 in) </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> Queen </Th> <Td> 150 cm × 200 cm (60 in × 80 in) </Td> <Td> 158 cm × 198 cm (62 in × 78 in) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 152 cm × 203 cm (60 in × 80 in) </Td> <Td> 152 cm × 203 cm (60 in × 80 in) </Td> <Td> 182 cm × 188 cm (72 in × 74 in) </Td> <Td> 154 cm × 195 cm (61 in × 77 in) </Td> <Td> 152 cm × 191 cm (60 in × 75 in) </Td> <Td> 152 cm × 198 cm (60 in × 78 in) </Td> </Tr> <Tr> <Th> Expanded, Super, or Olympic queen </Th> <Td> 170 cm × 200 cm (66 in × 80 in) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> King or Eastern King </Th> <Td> 190 cm × 200 cm (76 in × 80 in) or 500 cm (78 in) </Td> <Td> 193 cm × 203 cm (76 in × 80 in) </Td> <Td> 160 cm × 200 cm (63 in × 79 in) </Td> <Td> </Td> <Td> 152 cm × 198 cm (60 in × 78 in) </Td> <Td> 183 cm × 203 cm (72 in × 80 in) </Td> <Td> 167 cm × 203 cm (66 in × 80 in) </Td> <Td> 182 cm × 212 cm (72 in × 83 in) </Td> <Td> 170 cm × 195 cm (67 in × 77 in) </Td> <Td> 183 cm × 191 cm (72 in × 75 in) </Td> <Td> 183 cm × 198 cm (72 in × 78 in) </Td> </Tr> <Tr> <Th> California King, Western King, or King long </Th> <Td> 180 cm × 210 cm (72 in × 84 in) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 180 cm × 210 cm (72 in × 84 in) </Td> <Td> 200 cm × 200 cm (80 in × 80 in) </Td> <Td> </Td> <Td> 170 cm × 205 cm (67 in × 81 in) </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> Grand King Super King, Athletic King, or Texas King </Th> <Td> 200 cm × 250 cm (80 in × 98 in) </Td> <Td> </Td> <Td> 180 cm × 200 cm (71 in × 79 in) </Td> <Td> </Td> <Td> 180 cm × 200 cm (71 in × 79 in) </Td> <Td> 203 cm × 203 cm (80 in × 80 in) </Td> <Td> 183 cm × 203 cm (72 in × 80 in) </Td> <Td> </Td> <Td> 194 cm × 205 cm (76 in × 81 in) </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> Large Emperor </Th> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 213 cm × 213 cm (84 in × 84 in) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> Caesor </Th> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 245 cm × 200 cm (96 in × 79 in) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> </Th> <Th> North America </Th> <Th> South America </Th> <Th_colspan="3"> Europe </Th> <Th_colspan="2"> Oceania </Th> <Th_colspan="4"> Asia </Th> </Tr>

What is the size of a queen bed in meters