Trifold Brochure Panel Calculator

Work out the width and pixel size of each panel in a trifold (C-fold) brochure. Choose US Letter or A4, or enter a custom page size and fold count.

Brochure type Unit Page width Page height Number of panels

Important folding note

Panel widths shown here are the page width divided evenly by the number of panels. Real print shops adjust trifold panels slightly (the wrapped panel is usually a little narrower) to account for paper thickness. Always ask for the print service's fold template before exporting.

Frequently asked questions

What size is each panel of a US Letter trifold brochure?

8.5 in divided by 3 panels is about 2.83 in wide per panel, with a height of 11 in. At 300 DPI each panel is about 850 × 3300 pixels (before folding adjustments).

What pixel size is an A4 trifold at 300 DPI?

A4 is 210 × 297 mm. Each of the three panels is about 70 × 297 mm, which is roughly 827 × 3508 pixels at 300 DPI before folding allowances.