<Table> <Tr> <Th> US code </Th> <Th> Japan code </Th> <Th> Alias </Th> <Th> Size inches ( mm ) </Th> <Th> Pixels at 300 PPI </Th> <Th> Aspect ratio </Th> <Th> Notes </Th> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Wallet </Td> <Td> 2 × 3 ( 51 × 76 ) </Td> <Td> 600 × 900 </Td> <Td> 3 : 2 ( 1.5 ) </Td> <Td> Very often called `` wallet '' size . </Td> </Tr> <Tr> <Td> 2R </Td> <Td> </Td> <Td> Wallet </Td> <Td> ​ 2 ⁄ × ​ 3 ⁄ ( 63.5 × 89 ) </Td> <Td> 750 × 1050 </Td> <Td> 7 : 5 ( 1.4 ) </Td> <Td> Older standard for `` wallet '' size . </Td> </Tr> <Tr> <Td> </Td> <Td> DSC </Td> <Td> </Td> <Td> ​ 3 ⁄ × ​ 4 ⁄ ( 83 × 119 ) </Td> <Td> 974 × 1417 </Td> <Td> 16 : 11 ( 1.45 ) </Td> <Td> Size in inches is approximate . </Td> </Tr> <Tr> <Td> 3R </Td> <Td> </Td> <Td> 9 × 13 cm , B7 , Enprint </Td> <Td> ​ 3 ⁄ × 5 ( 89 × 127 ) </Td> <Td> 1050 × 1500 </Td> <Td> 10 : 7 ( 1.43 ) </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Chou # 4 </Td> <Td> 3.5 × 8.1 ( 90 × 205 ) </Td> <Td> 1050 × 2430 </Td> <Td> 16 : 7 ( 2.29 ) </Td> <Td> envelope size </Td> </Tr> <Tr> <Td> </Td> <Td> PC </Td> <Td> Hagaki , A6 </Td> <Td> 3.9 × 5.8 ( 100 × 148 ) </Td> <Td> 1170 × 1740 </Td> <Td> 3 : 2 ( 1.5 ) </Td> <Td> postcard size </Td> </Tr> <Tr> <Td> 4R </Td> <Td> KG </Td> <Td> 10 × 15 cm </Td> <Td> 4 × 6 ( 102 × 152 ) </Td> <Td> 1200 × 1800 </Td> <Td> 3 : 2 ( 1.5 ) </Td> <Td> standard 135 film & print size </Td> </Tr> <Tr> <Td> 4D , 6D </Td> <Td> </Td> <Td> </Td> <Td> ​ 4 ⁄ × 6 ( 114 × 152 ) </Td> <Td> 1350 × 1800 </Td> <Td> 4 : 3 ( 1.33 ) </Td> <Td> new size for most consumer level digital cameras and Micro 4 / 3 cameras </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Chou # 3 </Td> <Td> 4.7 × 9.3 ( 120 × 235 ) </Td> <Td> 1410 × 2790 </Td> <Td> 2 : 1 ( 2.0 ) </Td> <Td> envelope size </Td> </Tr> <Tr> <Td> 5R </Td> <Td> 2L </Td> <Td> 13 × 18 cm , B6 </Td> <Td> 5 × 7 ( 127 × 178 ) </Td> <Td> 1500 × 2100 </Td> <Td> 7 : 5 ( 1.4 ) </Td> <Td> twice the size of a 2R print </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Ofuku Hagaki , A5 </Td> <Td> 5.8 × 7.9 ( 148 × 200 ) </Td> <Td> 1740 × 2370 </Td> <Td> 4 : 3 ( 1.33 ) </Td> <Td> postcard size </Td> </Tr> <Tr> <Td> 6R </Td> <Td> 8P </Td> <Td> 15 × 20 cm </Td> <Td> 6 × 8 ( 152 × 203 ) </Td> <Td> 1800 × 2400 </Td> <Td> 4 : 3 ( 1.33 ) </Td> <Td> twice the size of a 4R print </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 18 × 24 cm </Td> <Td> 7 × ​ 9 ⁄ ( 178 × 240 ) </Td> <Td> 2100 × 2850 </Td> <Td> 19 : 14 ( 1.36 ) </Td> <Td> for B&W paper </Td> </Tr> <Tr> <Td> 8R </Td> <Td> 6P </Td> <Td> 20 × 25 cm </Td> <Td> 8 × 10 ( 203 × 254 ) </Td> <Td> 2400 × 3000 </Td> <Td> 5 : 4 ( 1.25 ) </Td> <Td> Can be used for contact prints from 8 × 10 film . </Td> </Tr> <Tr> <Td> S8R </Td> <Td> 6PW </Td> <Td> 20 × 30 cm </Td> <Td> 8 × 12 ( 203 × 305 ) </Td> <Td> 2400 × 3600 </Td> <Td> 3 : 2 ( 1.5 ) </Td> <Td> closest approximation to A4 ( 210 × 297mm ) , twice the size of a 6R print </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 24 × 30 cm </Td> <Td> ​ 9 ⁄ × 12 ( 240 × 305 ) </Td> <Td> 2850 × 3600 </Td> <Td> 24 : 19 ( 1.26 ) </Td> <Td> for B&W paper </Td> </Tr> <Tr> <Td> 10R </Td> <Td> 4P </Td> <Td> </Td> <Td> 10 × 12 ( 254 × 305 ) </Td> <Td> 3000 × 3600 </Td> <Td> 6 : 5 ( 1.2 ) </Td> <Td> </Td> </Tr> <Tr> <Td> S10R </Td> <Td> 4PW </Td> <Td> </Td> <Td> 10 × 15 ( 254 × 381 )
<Table> <Tr> <Th> US code </Th> <Th> Japan code </Th> <Th> Alias </Th> <Th> Size inches ( mm ) </Th> <Th> Pixels at 300 PPI </Th> <Th> Aspect ratio </Th> <Th> Notes </Th> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Wallet </Td> <Td> 2 × 3 ( 51 × 76 ) </Td> <Td> 600 × 900 </Td> <Td> 3 : 2 ( 1.5 ) </Td> <Td> Very often called `` wallet '' size . </Td> </Tr> <Tr> <Td> 2R </Td> <Td> </Td> <Td> Wallet </Td> <Td> ​ 2 ⁄ × ​ 3 ⁄ ( 63.5 × 89 ) </Td> <Td> 750 × 1050 </Td> <Td> 7 : 5 ( 1.4 ) </Td> <Td> Older standard for `` wallet '' size . </Td> </Tr> <Tr> <Td> </Td> <Td> DSC </Td> <Td> </Td> <Td> ​ 3 ⁄ × ​ 4 ⁄ ( 83 × 119 ) </Td> <Td> 974 × 1417 </Td> <Td> 16 : 11 ( 1.45 ) </Td> <Td> Size in inches is approximate . </Td> </Tr> <Tr> <Td> 3R </Td> <Td> </Td> <Td> 9 × 13 cm , B7 , Enprint </Td> <Td> ​ 3 ⁄ × 5 ( 89 × 127 ) </Td> <Td> 1050 × 1500 </Td> <Td> 10 : 7 ( 1.43 ) </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Chou # 4 </Td> <Td> 3.5 × 8.1 ( 90 × 205 ) </Td> <Td> 1050 × 2430 </Td> <Td> 16 : 7 ( 2.29 ) </Td> <Td> envelope size </Td> </Tr> <Tr> <Td> </Td> <Td> PC </Td> <Td> Hagaki , A6 </Td> <Td> 3.9 × 5.8 ( 100 × 148 ) </Td> <Td> 1170 × 1740 </Td> <Td> 3 : 2 ( 1.5 ) </Td> <Td> postcard size </Td> </Tr> <Tr> <Td> 4R </Td> <Td> KG </Td> <Td> 10 × 15 cm </Td> <Td> 4 × 6 ( 102 × 152 ) </Td> <Td> 1200 × 1800 </Td> <Td> 3 : 2 ( 1.5 ) </Td> <Td> standard 135 film & print size </Td> </Tr> <Tr> <Td> 4D , 6D </Td> <Td> </Td> <Td> </Td> <Td> ​ 4 ⁄ × 6 ( 114 × 152 ) </Td> <Td> 1350 × 1800 </Td> <Td> 4 : 3 ( 1.33 ) </Td> <Td> new size for most consumer level digital cameras and Micro 4 / 3 cameras </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Chou # 3 </Td> <Td> 4.7 × 9.3 ( 120 × 235 ) </Td> <Td> 1410 × 2790 </Td> <Td> 2 : 1 ( 2.0 ) </Td> <Td> envelope size </Td> </Tr> <Tr> <Td> 5R </Td> <Td> 2L </Td> <Td> 13 × 18 cm , B6 </Td> <Td> 5 × 7 ( 127 × 178 ) </Td> <Td> 1500 × 2100 </Td> <Td> 7 : 5 ( 1.4 ) </Td> <Td> twice the size of a 2R print </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Ofuku Hagaki , A5 </Td> <Td> 5.8 × 7.9 ( 148 × 200 ) </Td> <Td> 1740 × 2370 </Td> <Td> 4 : 3 ( 1.33 ) </Td> <Td> postcard size </Td> </Tr> <Tr> <Td> 6R </Td> <Td> 8P </Td> <Td> 15 × 20 cm </Td> <Td> 6 × 8 ( 152 × 203 ) </Td> <Td> 1800 × 2400 </Td> <Td> 4 : 3 ( 1.33 ) </Td> <Td> twice the size of a 4R print </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 18 × 24 cm </Td> <Td> 7 × ​ 9 ⁄ ( 178 × 240 ) </Td> <Td> 2100 × 2850 </Td> <Td> 19 : 14 ( 1.36 ) </Td> <Td> for B&W paper </Td> </Tr> <Tr> <Td> 8R </Td> <Td> 6P </Td> <Td> 20 × 25 cm </Td> <Td> 8 × 10 ( 203 × 254 ) </Td> <Td> 2400 × 3000 </Td> <Td> 5 : 4 ( 1.25 ) </Td> <Td> Can be used for contact prints from 8 × 10 film . </Td> </Tr> <Tr> <Td> S8R </Td> <Td> 6PW </Td> <Td> 20 × 30 cm </Td> <Td> 8 × 12 ( 203 × 305 ) </Td> <Td> 2400 × 3600 </Td> <Td> 3 : 2 ( 1.5 ) </Td> <Td> closest approximation to A4 ( 210 × 297mm ) , twice the size of a 6R print </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 24 × 30 cm </Td> <Td> ​ 9 ⁄ × 12 ( 240 × 305 ) </Td> <Td> 2850 × 3600 </Td> <Td> 24 : 19 ( 1.26 ) </Td> <Td> for B&W paper </Td> </Tr> <Tr> <Td> 10R </Td> <Td> 4P </Td> <Td> </Td> <Td> 10 × 12 ( 254 × 305 ) </Td> <Td> 3000 × 3600 </Td> <Td> 6 : 5 ( 1.2 ) </Td> <Td> </Td> </Tr> <Tr> <Td> S10R </Td> <Td> 4PW </Td> <Td> </Td> <Td> 10 × 15 ( 254 × 381 )
what is the size of 4r photo in cm
what is the size of 4r photo in cm
× 15 cm </Td> <Td> 4
× 15 cm </Td> <Td> 4