Print sizes and resolution requirements

1. Visual guide to common sizes

8x10 print in portrait mode 8x10 inches = 20x25cm
12x12 print in portrait mode 12x12 inches = 30x30cm
16x16 print in portrait mode 16x16 inches = 40x40cm
16x20 print in portrait mode 16x20 inches = 40x48cm
18x24 print in portrait mode 18x24 inches = 45x60cm
24x36 print in portrait mode 24x36 inches = 60x91cm

2. Inch to Cm Conversion Table

Most common photo print and frame sizes are described in inches while most of the world have been using the metric system since forever ago.

The following chart provides a quick and easy guide for you to convert an inch-based measurement into the approximate centi-meters. We also provide the minimum resolution requirements for printing on those sizes.

Inches Metrics Min. Resolution Ideal. Resolution
8x10" 20x25cm 576 x 720px 2400 x 3000px
8x12" 20x30cm 576 x 864px 2400 x 3600px
9x16" 22x40cm 648 x 1152px 2700 x 4800px
12x12" 30x30cm 864 x 864px 3600 x 3600px
11x14" 27x35cm 792 x 1008px 3300 x 4200px
12x16" 30x40cm 864 x 1152px 3600 x 4800px
12x18" 30x45cm 864 x 1296px 3600 x 5400px
12x24" 30x60cm 864 x 1728px 3600 x 7200px
14x24" 35x60cm 1008 x 1728px 4200 x 7200px
18x24" 45x60cm 1296 x 1728px 5400 x 7200px
20x24" 48x60cm 1440 x 1728px 6000 x 7200px
24x24" 60x60cm 1728 x 1728px 7200 x 7200px
20x30" 48x75cm 1440 x 2160px 6000 x 9000px
24x32" 60x80cm 1728 x 2304px 7200 x 9600px
24x36" 60x91cm 1728 x 2592px 7200 x 10800px

3. ISO Standard Paper Sizes

As if our life isn't complicated enough, there is also ISO standard sizes.

Since We don't offer prints at the ISO sizes, you may find the following table helpful for determine which are the closest sizes we do offer.

ISO Standard Size (Width x Height) Closest Sizes
A1 594 x 841 mm - 23.4 x 33.1 in 609 x 812 mm - 24 x 32"
A2 420 x 594 mm - 16.5 x 23.4 in 457 x 609 mm - 18 x 24"
A3 297 x 420 mm - 11.7 x 16.5 in 305 x 406 mm - 12 x 16"
A4 210 x 297 mm - 8.3 x 11.7 in 203 x 305 mm - 8 x 12"

3. Important Notes

Formula for inch to cm conversion

The measurements above are an approaximate of the final sizes in cm.

If you want an accurate measurement, times the inches by 25.4 to get the precise metrics.

For example:
12 inches = 12 * 25.4 = 305 mm

Formula for resolution requirements

The resolution requirements quoted are the minimum requirements needed. They are calculated at 72DPI.

If you want the best result, or if you are a professional photographer, we'd recommend at least 200 and ideally 300 DPI.

To calculate the accurate resolution requirement, time the inches with the DPI.

For example: 12 inches at 300 DPI = 12 * 300 = 3600px