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Booklet Page Scale Calculator

Two pages side by side on one sheet share a width that the margins and the gutter reduce. Enter the sheet, the margins, the gutter and the size of your page. You get the zone for one page, the scale in percent to print at, and the size the page will have on paper.

Print at

95.2381 %

Zone per page 141.5 × 200 mm · printed page 140.952 × 200 mm · limited by the height

The scale is never above 100 %: a page that already fits is not enlarged. Many printers shrink the image or keep an unprintable edge, so print one test sheet and measure it.

How it works

  1. Pick a sheet size or type it in millimetres, then enter the four margins and the gutter.
  2. Pick the size of your source page or type it in millimetres.
  3. Read the scale in percent and the zone available for one page.
  4. Copy the result and set that scale in your print dialog.

What people use it for

  • A5 pages on an A4 sheet

    Find the scale that keeps a whole A5 page inside the margins of a landscape A4 sheet.

  • A booklet from a Letter document

    Fit two half-Letter pages on a landscape Letter sheet with a gutter for the staples.

  • Checking a margin choice

    See how much a wider gutter shrinks the page before you print a test.

Questions

What is the formula?
Zone width = (sheet width − left margin − right margin − gutter) ÷ 2. Zone height = sheet height − top margin − bottom margin. Scale = the smallest of zone width ÷ page width, zone height ÷ page height and 1. The printed page is the source page multiplied by that scale.
Why is the scale never above 100 %?
Because the page is shown at full size if it already fits, not enlarged. Enlarging a page changes its look and the resolution of its images. The page says so when this happens.
What does the page refuse?
Sizes of 0 or less for the sheet or the page, negative margins or gutter, and margins that leave no room for a page. In the last case it shows the zone it found so you can reduce the margins.
Will my printer print exactly this?
Not always. Many printers shrink the image or leave an unprintable edge of their own. Print one test sheet and measure it before you print the run.