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QR Code Mimumum Print Size Chart

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May 22nd 2012
Seth Carstens
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QR Code Minimum Size
Modules Characters Scan Distance
150mm (6″) 300mm (12″) 450mm (18″)
25 26 15mm (0.6″) 30mm (1.2″) 46mm (1.8″)
30 49 18mm (0.7″) 36mm (1.4″) 55mm (2.1″)
35 72 21mm (0.8″) 42mm (1.7″) 64mm (2.5″)
40 98 24mm (0.9″) 48mm (1.9″) 73mm (2.9″)
45 125 27mm (1.1″) 54mm (2.1″) 82mm (3.2″)
50 163 30mm (1.2″) 60mm (2.4″) 91mm (3.6″)
55 203 33mm (1.3″) 66mm (2.6″) 100mm (3.9″)
60 249 36mm (1.4″) 72mm (2.8″) 109mm (4.3″)
65 298 39mm (1.5″) 78mm (3.1″) 118mm (4.7″)
70 351 42mm (1.7″) 84mm (3.3″) 127mm (5.0″)
75 407 45mm (1.8″) 90mm (3.5″) 137mm (5.4″)
80 468 48mm (1.9″) 96mm (3.8″) 146mm (5.7″)
85 534 51mm (2.0″) 102mm (4.0″) 155mm (6.1″)
90 601 54mm (2.1″) 108mm (4.3″) 164mm (6.4″)
95 669 57mm (2.2″) 114mm (4.5″) 173mm (6.8″)
100 739 60mm (2.4″) 120mm (4.7″) 182mm (7.2″)
Securing Margin
When the symbol version and module size are determined, the size of the QR Code symbol is determined. The QR Code symbol area requires a margin or “quiet zone” around it to be used.

The margin is a clear area around a symbol where nothing is printed. QR Code requires a four-module wide margin at all sides of a symbol.
Margin of QR Code
Four-module wide margin is required around a symbol.
Example of Calculating QR Code Area
Below is an example of calculating the total QR Code area including margin.
(Example) Creating QR Code to encode 50 alphanumeric characters
  1. Specify the error correction level as the standard “M”.
  2. Obtain a version from the Version and maximum data capacity table (find the intersection of alphanumeric characters and Level M). → Version 3 capable of storing 50 or more characters. (Version 2 with Level M holds only 38 characters.)
  3. Use a printer with 400 dpi resolution. → 0.254 mm when printed with 4-dot configuration.(Equation: 25.4 mm/inch ÷ 400 dpi × 4 dots/module = 0.254 mm/module)
  4. 4. Version 3 = 29 modules, therefore, the size of QR Code is 29 modules × 0.254 mm/module = 7.366 mm.
  5. Secure a four-module wide margin. 7.366mm + 0.254mm/module × 8 modules =9.398mm
In other words, the required QR Code area is 9.398mm2.
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