Pixel ↔ CM Calculator
Convert between pixels, centimeters, and inches at any DPI resolution. Includes common exam photo size presets for SSC, UPSC, and IBPS.
Result in CM
5.08
CMPrint documents use 300 DPI. Screen images use 72–96 DPI.
Common Exam Photo Sizes
Passport Photo
3.5 × 4.5 cm
276 × 354 px @ 200 DPI
SSC CGL Photo
3.5 × 4.5 cm
276 × 354 px @ 200 DPI
UPSC Photo
3.5 × 4.5 cm
276 × 354 px @ 200 DPI
IBPS Signature
2 × 7 cm
157 × 551 px @ 200 DPI
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How to Convert Pixels to CM
The formula to convert pixels to centimeters depends on the DPI (Dots Per Inch) resolution:
CM = (Pixels ÷ DPI) × 2.54
For example, a 600 × 600 pixel image at 200 DPI = 7.62 cm × 7.62 cm.
What DPI Should I Use?
- 72–96 DPI: Screen / website images (low resolution)
- 150 DPI: Standard print quality
- 200 DPI: Most government exam portals specify this
- 300 DPI: Professional photo printing
- 600 DPI: High-quality scanning and archival