DPI & print size calculator
Convert between mm and pixels, compute DPI, and include bleed. All values update instantly.
mm ⇒ Pixel
mm
mm
dpi
mm bleed (each side)
= 1181 × 591 px
with bleed: 1252 × 661 px
bleed per side: 35 px
Pixel ⇒ mm
px
px
dpi
Enter values
Pixels & mm ⇒ dpi
mm
px
Enter values
Visual example
The colored area represents the bleed. The inner white area is the final trim size.
content: 100 × 50 mm
with bleed: 106 × 56 mm
- Formula mm → px: px = mm ÷ 25.4 × dpi
- Formula px → mm: mm = px ÷ dpi × 25.4
- Bleed: total size with bleed adds bleed to all four sides (width + 2×bleed, height + 2×bleed).
Example numbers
100 × 50 mm at 300 dpi → 1181 × 591 px
with 3 mm bleed → 1252 × 661 px
bleed per side: 35 px