Tooldeon

Print bleed calculator

Enter the finished (trim) size of the print, the bleed on each side and the safety margin. You get the size to set up the file, the area where text is safe, and the pixels needed at your DPI.

Units
in
in
in
in
dpi
Document width with bleed8.75 in
Document height with bleed11.25 in
Document width
2,625 px
Document height
3,375 px
Trim width
2,550 px
Trim height
3,300 px
Bleed
38 px
Safe area width
8 in
Safe area height
10.5 in

Runs in your browser: nothing you enter is sent anywhere.

How to use it

  1. Choose millimetres or inches.
  2. Enter the trim size: the size of the finished piece after cutting.
  3. Enter the bleed per side and the safety margin from your printer’s specification.
  4. Enter the resolution, usually 300 dpi for print, and read the sizes.

How it works

Document size = trim + 2 × bleed in each direction. Safe area = trim − 2 × margin. Pixels = inches × dpi, rounded to whole pixels; millimetres are divided by 25.4 to get inches.

Worked example

An A4 flyer, 210 × 297 mm, with 3 mm bleed and a 5 mm margin at 300 dpi: the document is 216 × 303 mm, which is 2,551 × 3,579 px. The trim is 2,480 × 3,508 px, the bleed 35 px per side, and the safe area 200 × 287 mm. A US Letter page, 8.5 × 11 in with 0.125 in bleed, becomes 8.75 × 11.25 in, 2,625 × 3,375 px.

Tips

  • Extend backgrounds and photos to the outer edge of the bleed, not just to the trim.
  • Export the file with the bleed included, and with crop marks if the printer asks; do not crop it to the trim size.
  • The pixel size is what a photo or a raster design needs to print sharply at that resolution.

Frequently asked questions

What is bleed in printing?

Bleed is extra image beyond the trim line. Printed sheets are cut in stacks, and the cut can shift slightly; if the background runs past the line, the cut never leaves a white edge. The printer trims the bleed away.

How much bleed do I need?

Your printer's specification decides. 3 mm per side is very common in metric countries and 0.125 inch (1/8 in) in the US; some products, such as large formats or books, ask for more.

What is the safe area?

The zone inside the trim where text and logos should stay, so that a slightly shifted cut does not touch them. The margin is measured from the trim edge inwards.

How many pixels do I need for print?

Size in inches times DPI. A4 with 3 mm bleed (216 × 303 mm) at 300 dpi is 216 ÷ 25.4 × 300 = 2,551 by 3,579 px.

More in Images

All tools in this category: Images ·Updated November 7, 2026

Privacy choices

Google Analytics shows us which tools are used and whether they work. It may set cookies. Your choice is kept in this browser.