PrintRatios

18×24 print size

Updated 3 November 2026

Short answer: 18 × 24 inches is 45.7 × 61 cm, a 3:4 shape. At 300 DPI the file needs 5,400 × 7,200 pixels, and it also prints 6×8, 9×12 and 12×16.

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18 × 24 in numbers

MeasureValue
Inches18 × 24
Centimetres45.7 × 61
Ratio3:4
Pixels at 300 DPI5,400 × 7,200
Pixels at 150 DPI2,700 × 3,600

18 × 24 or 24 × 36?

They are different shapes. 18 × 24 is 3:4, wider than the 2:3 of 24 × 36. Buyers with one of these frames need the matching file.

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Questions people ask

Is 18x24 the same ratio as 24x36?

No. 18x24 is 3:4 and 24x36 is 2:3.

How many pixels is 18x24 at 300 DPI?

5,400 by 7,200 pixels.

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