You can use the 2nd photo in the product listing to compare different size and frame options in a sample room setting. When you choose different options from the dropdown menu, you can see it reflecting in the room. (Not applicable for Set Of Prints)
 


Size cm inch
A0
84.1 x 118.9 cm 
33.1 x 46.8 in
A1
59.4 x 84.1 cm
23.4 x 33.1 in
A2 42 x 59.4 cm 16.5 x 23.4 in
A3
29.7 x 42 cm
11.7 x 16.5 in
A4
21 x 29.7 cm
8.3 x 11.7 in
76.2 x 101.6 cm 30 x 40 in
61 x 81 cm 24 x 32 in
45.72 x 61 cm 18 x 24 in
30.5 x 40.6 cm 12 x 16 in
71 x 71 cm
28 x 28 in
50.8 x 50.8 cm 20 x 20 in
40.6 x 40.6 cm
12 x 12 in


For framed orders, please add approximately 4 cm / 1.6 in to the total size  
Example:
A2 Print Only - 42 x 59.4 cm / 16.5 x 23.4 in
A2 Framed Print - 46 x 63.4 cm / 18.1 x 25 in