2.125 Inches to Pixels
2.125 inches is 638 pixels at 300 DPI, 319 pixels at 150 DPI and 204 pixels at the 96 PPI screen standard.
Edit any field to convert a different size at the same resolution.
2.125 inches in pixels at every common resolution
The pixel count changes with the resolution you are working to — these are the values you are most likely to need.
| Resolution | Pixels | Typical use |
|---|---|---|
| 72 DPI | 153 | Legacy web |
| 96 DPI | 204 | Screen and CSS |
| 150 DPI | 319 | Posters and drafts |
| 300 DPI | 638 | Photo and magazine print |
| 600 DPI | 1,275 | Fine art and line work |
How the conversion works
Pixels are found by multiplying the length in inches by the pixel density: pixels = inches × DPI. For 2.125 inches at 300 DPI that is 2.125 × 300 = 638.
2.125 inches is the height of an ISO/IEC 7810 ID-1 card — the shape of every bank and ID card.
The full card is 85.60 × 53.98 mm, which converts to 3.370 × 2.125 inches; only the height lands on a round fraction.
At 300 DPI that is a file of 638 pixels, which is what print shops ask for at a size handled this close.
In metric, 2.125 inches is 5.3975 cm or 54 mm, and in typographic units it is 153 points.
Frequently asked questions
How many pixels is 2.125 inches, the height of an ISO/IEC 7810 ID-1 card?
638 pixels at 300 DPI, 319 at 150 DPI and 204 at the 96 PPI screen standard. Multiply the inches by whichever density you are working to.
How many pixels is 2.125 inches at 300 DPI?
638 pixels. That is the standard density for photographic and magazine printing.
What is 2.125 inches in centimetres?
5.3975 cm, because one inch is exactly 2.54 centimetres.
Is 300 DPI the right density for this size?
Yes. At this size the finished piece is held or read close up, which is exactly what the 300 DPI standard is for — 638 pixels. Dropping to 150 halves that to 319 and the softening is visible in the hand.
Why does the pixel count change with DPI?
A pixel has no fixed physical size. The DPI value says how many pixels fill one inch, so raising it raises the pixel count needed to cover the same physical space.