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30 x 40 Photo Size
Find 30 x 40 Photo size in mm, cm, inches, pixels, and common DPI values.
Immediate answer
30 x 40 Photo at a glance
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Use 30 x 40 Photo for
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30 x 40 Photo key dimensions
The same values in compact cards for scanning.
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30 x 40 Photo pixel table
Common DPI values for designers and print workflows. Use the bottom calculator bar for custom DPI or orientation.
| DPI | Portrait pixels | Landscape pixels |
|---|---|---|
| 72 DPI | 2160 x 2880 px | 2880 x 2160 px |
| 96 DPI | 2880 x 3840 px | 3840 x 2880 px |
| 150 DPI | 4500 x 6000 px | 6000 x 4500 px |
| 300 DPI | 9000 x 12000 px | 12000 x 9000 px |
| 600 DPI | 18000 x 24000 px | 24000 x 18000 px |
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Formula
SizeKit uses a transparent rounding rule.
pixels = round((millimeters / 25.4) x DPI). Inches = millimeters / 25.4.
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FAQ
Quick answers for this paper size.
What is 30 x 40 Photo size in inches?
30 x 40 Photo is 30 x 40 in when rounded to two decimals.
What is 30 x 40 Photo at 300 DPI?
30 x 40 Photo at 300 DPI is 9000 x 12000 px.
Can I switch to landscape?
Yes. Use the bottom calculator and choose landscape to swap width and height.
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Related sizes
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