4×7″

 Inches : 4 x 7

Centimeters : 10.16 x 17.78

Millimeters : 101.6 x 177.8

Meters : 0.1016 x 0.1778

5×7″

 A5

Inches : 5 x 7

Centimeters : 12.7 x 17.78

Millimeters : 127 x 177.8

Meters : 0.127 x 0.1778

6×8″

 Inches : 6 x 8

Centimeters : 15.25 x 20.32

Millimeters : 152.4 x 203.2

Meters : 0.1524 x 0.2032

8×10″

 Inches : 8 x 10

Centimeters : 20.32 x 25.4

Millimeters : 203.2 x 254.0

Meters : 0.2032 x 0.254

8×12″

 A4

Inches : 8 x 12

Centimeters : 20.32 x 30.48

Millimeters : 203.2 x 304.8

Meters : 0.2032 x 0.33

12×16″

 A3

Inches : 12 x 16

Centimeters : 30.48 x 40.64

Millimeters : 304.8 x 406.5

Meters : 0.33 x 0.4064

15×19″

 Inches : 15 x 19

Centimeters : 38.1 x 48.26

Millimeters : 381 x 482.6

Meters : 0.381 x 0.483

16×20″

 A2

Inches : 16 x 20

Centimeters : 40.64 x 50.8

Millimeters : 406.4 x 508.0

Meters : 0.406 x 0.508

16×24″

 Inches : 16 x 24

Centimeters : 40.64 x 60.96

Millimeters : 406.4 x 609.6

Meters : 0.40 x 0.60

20×24″

 Inches : 20 x 24

Centimeters : 50.8 x 60.96

Millimeters : 406.4 x 609.6

Meters : 0.50 x 0.60

24×30″

 Inches : 24 x 30

Centimeters : 60.96 x 76.2

Millimeters : 609.6 x 762.0

Meters : 0.60 x 0.762

24×36″

 Inches : 24 x 36

Centimeters : 60.96 x 91.44

Millimeters : 609.6 x 914.4

Meters : 0.60 x 0.91

30×36″

 Inches : 30 x 36

Centimeters : 76.2 x 91.44

Millimeters : 762 x 914.4

Meters : 0.76 x 0.91

30×40″

 Inches : 30 x 40

Centimeters : 76.2 x 101.6

Millimeters : 762.0 x 101.2

Meters : 0.76 x 1.01

36×40″

 Inches : 36 x 40

Centimeters : 91.44 x 101.6

Millimeters : 914.4 x 101.6

Meters : 0.91 x 1.01

36 x 48″

 Inches : 36 x 48

Centimeters : 91.44 x 121.92

Millimeters : 914.0 x 101.6

Meters : 0.91 x 1.21