20×30 Photo Size in Pixels
Convert a 20×30 poster or photo to pixels and choose realistic DPI based on source detail and viewing distance.
20×30 inch pixel calculator
20×30 inch · 0.6667:1 aspect ratio
20×30 inch pixels by DPI
| Resolution | Pixel dimensions | Approx. megapixels |
|---|---|---|
| 72 DPI | 1440 × 2160 px | 3.11 MP |
| 96 DPI | 1920 × 2880 px | 5.53 MP |
| 150 DPI | 3000 × 4500 px | 13.50 MP |
| 240 DPI | 4800 × 7200 px | 34.56 MP |
| 300 DPI | 6000 × 9000 px | 54.00 MP |
DPI here means pixels supplied per printed inch. It does not change the file until you resample or export it. Ask the printer whether bleed is required; bleed adds image beyond the final trim size.
Choose a useful print resolution
300 DPI is a strong target for close-viewed photos. 240 DPI is often a practical high-quality alternative, while 150 DPI may be sufficient for a larger print viewed farther away. A low-detail source does not become sharper merely by entering a higher DPI value.
Inspect the original pixel dimensions, calculate the available DPI, then crop to the 2:3 shape without stretching. Use the full print size and DPI calculator for custom units and dimensions.
Crop, bleed and orientation
A source with another aspect ratio must either be cropped or fitted with borders. Protect faces and text from both the crop and the printer's trim tolerance. Width and height can be swapped for landscape orientation without changing the required pixel count.
Frequently asked questions
Is this a fixed requirement?
No. It is a calculation or planning reference. Confirm the current destination, device, printer or platform before final delivery.
Will changing dimensions improve quality?
Not by itself. Resizing can discard or interpolate pixels; it cannot recreate genuine detail that was never captured.
Does AspectRatioZ upload my files?
No. The linked calculators process dimensions and selected images locally in your browser unless a page explicitly says otherwise.