A0 Paper Size is 841 x 1189

The A0 paper size is often rounded to 840 x 1190 mm. If you need to get an idea of the size of A0 Paper then get 16 sheets of paper and lay them on the ground 4 across 4 down.
A0 = 16 x a4 / 8 x a3 / 4 x a2s / 2x a1

A0 Paper Measurements

Millimeters - 841 x 1189 mm
Centimeters - 84.1 x 118.9 cm
Inches / Decimal - 33.11 x 46.81 inches     
Inches / Fraction - 33 1/8 x 46 9/16     (closest 16th)
Points - 2384 x 3370 pt
Picas - 198.66 x 280.87

A0 Paper Size for digital images

Pixels at 72 PPi - 2384 x 3370 ppi - 8 million pixels
CMYK  - 30.6 MB
RGB - 23.0 MB
Gray Scale - 7.6 MB
Bitmap - 0.98

Pixels at 150 PPi        4967 x 7022 ppi - 34.9 million pixels
CMYK  - 133.1 MB
RGB - 99.8 MB
Gray Scale 33.3 MB
Bitmap 4.16 MB

Pixels at 300 PPi        9933 x 14043 ppi - 139.5 million pixels
CMYK - 532.1 MB
RGB - 399.1 MB
Gray Scale - 133.0 MB
Bitmap - 16.6 MB

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To have your A0 design printed take a look at our A0 poster printing page info for photo quality prints

A0 paper size A1 paper size A2 paper size A3 paper size A4 paper size