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Print Size Converter
Enter a size in inches, cm, mm, or pixels and see every unit at once — matched against ISO A-series sizes, at the DPI you choose.
How it works
Pick your starting unit
Inches, centimetres, millimetres, or pixels — whatever you have.
Enter width and height
Set a DPI if pixels matter for your print.
Read every conversion
See the size in all four units, plus the closest ISO A-series match.
Common print sizes, converted
| Inches | Centimetres | Millimetres | Pixels @ 300 DPI |
|---|---|---|---|
| 5×7 | 12.7×17.8 | 127×178 | 1500×2100 |
| 8×10 | 20.3×25.4 | 203×254 | 2400×3000 |
| 8.27×11.69 (A4) | 21×29.7 | 210×297 | 2481×3507 |
| 11×14 | 27.9×35.6 | 279×356 | 3300×4200 |
| 16×20 | 40.6×50.8 | 406×508 | 4800×6000 |
| 24×36 | 61×91.4 | 610×914 | 7200×10800 |
Frequently asked questions
Is A4 the same size as 8x10?▾
No. A4 is 210×297mm (8.27×11.69in), while 8×10in is 203×254mm — close, but not identical, and different proportions (A4 is 1:1.41, 8×10 is 4:5). Framing an 8×10 print in an A4 frame leaves a gap on one side. Enter 8, 10 in inches above to see the exact A4 comparison.
How many pixels do I need per inch for printing?▾
300 DPI (pixels per inch) is standard for sharp framed prints; 150 DPI is acceptable for large posters seen from a distance. Enter your size and DPI above to get the exact pixel dimensions required.
How do I convert cm to inches for a print?▾
1 inch = 2.54cm. Select "Centimetres" above, enter your size, and the converter shows the exact inch, mm, A-series, and pixel equivalents at once.
What print size is closest to A4?▾
8.5×11in (US Letter) is the closest common US size to A4, though not identical. For an exact A4 print, use 210×297mm or 8.27×11.69in.
Why does the pixel size change when I change DPI?▾
Pixel dimensions are physical size × DPI. The same 8×10in print needs 2400×3000px at 300 DPI but only 1200×1500px at 150 DPI — same paper size, different resolution requirement.
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