Aspect Ratio and Sizes

Common film and print sizes with aspect ratios (width by height)

Aspect Ratios (Film)

Disc film 1.38:1
110 1.31:1
126 1:1
APS (c) 1.5:1
APS (h) 1.75:1
APS (p) 2.5:1
35mm (half frame) 1.33:1
35mm 1.5 : 1
35mm (X Pan) 2.71 :1
120 / 6×4.5 1.33 : 1
120 / 6×6 1:1
120 / 6×7 1.17 : 1
120 / 6×8 1.33 : 1
120 / 6×9 1.5 : 1
120 / 6×12 2:1
120 / 6×18 3:1
5″x4″ 1.25 : 1
5”x7” 1.4:1
10″x8″ 1.25 : 1

Aspect Ratios (Print)

5″x4″ 1.25 : 1
5”x5” 1:1
6″x4″ 1.5 : 1
5″x7″ 1.4 : 1
8″x6″ 1.33 : 1
8”x8” 1:1
10″x7″ 1.43 :1
10″x8″ 1.25 : 1
12″x8″ 1.5 : 1
12”x12” 1:1
15″x12″ 1.25 : 1
16″x12″ 1.33 : 1
18″x12″ 1.5 :1
20”x16” 1.25:1
24”x20” 1.2:1
30”x20” 1.5:1
30”x24” 1.25:1
40”x30” 1.33:1
‘A’ sizes 1.41:1

Imperial / Metric Equivalents

Inches Millimetres
5 x 4 127 x 102
5 x 5 127 x 127
5 x 7 127 x 178
8 x 6 152 x 203
10 x 7 254 x 178
10 x 8 254 x 203
12 x 8 305 x 203
12 x 10 305 x 254
15 x 12 381 x 305
16 x 12 406 x 305
18 x 12 457 x 305
20 x 16 508 x 406

‘A’ Sizes

Inches Millimetres Centimetres
A0 46 1/8 x 33 1/8 1189 x 841 118.9 x 84.1
A1 33 1/8 x 23 3/8 841 x 595 84.1 x 59.5
A2 23 3/8 x 16 1/2 595 x 420 59.5 x 42
A3 16 1/2 x 11 3/4 420 x 297 42 x 29.7
A4 11 3/4 x 8 1/4 297 x 210 29.7 x 21
A5 8 1/4 x 5 7/8 210 x 149 21 x 14.9
A6 5 7/8 x 4 1/8 149 x 105 14.9 x 10.5