Are you designing a book? Here’s how to calculate the spine thickness

4 April 2024 /

Are you planning to create a book, brochure or magazine with a glued or sewn spine? If so, it is important to know the exact spine thickness in advance. This will allow you to determine precisely how much space you have for the title and any other graphic elements, enabling you to extend your design beautifully across the entire cover.

 

Calculate the spine thickness with our calculator

How exactly do you calculate the spine thickness? It all depends on the number of pages, the types of paper used for the cover and the interior, and their weight. Fortunately, you don’t need to be a maths genius. At Buroform, we have developed a handy online tool that does the calculation for you in no time. Simply enter the required parameters and our calculator will do the rest.

> Go to spine thickness calculator

 

Your choice of paper affects the spine thickness

Paper comes in all sorts of types, sizes and weights. The type you choose has a major impact on the spine thickness of your book. Does your creation not have that many pages, but do you still want a wide spine? Then you can play around with the paper thickness. A thicker paper type automatically makes the spine wider. A thinner one does the opposite, of course. Or you can go one step further and choose bulking paper: it has more air between the fibres, making it fuller than a non-bulking variant of the same weight.

 

Hardcover books

Hardcover books are a special case. You can also use our calculator for these. However, we recommend designing the interior first and waiting with the cover. Is your design more or less finalised? Then request a working drawing from us for the cover first. This allows us to perfectly match the spine thickness to your design, resulting in an even more beautiful end result.

Text or image on the spine

Are you using text or other graphic elements that need to be centred on the spine? Then you need to pay extra attention. Bookbinding is and always will be a craft, which means that small deviations are always possible. Fortunately, you can limit these deviations by formatting your file in a specific way, preferably in InDesign. An example of a glued brochure with a soft cover and glued spine:

  • Create a separate InDesign document for your cover.
  • Tick “pages side by side” in the document settings and set the margins in the document to 0 mm, with a bleed of 3 mm.
  • Add 3 pages.
  • Click on the hamburger menu in the “pages” panel and uncheck “allow document page order to be changed”.
  • Drag the 3 pages together in the panel so that they form a single spread.
  • Adjust the width of the middle page according to the calculated spine thickness (in the example below = 7 mm).
  • Export your document to a PDF in spread with crop marks, so that the spine thickness also has a crop mark. This gives the bookbinder all the information they need to position the spine neatly in the centre.
  • Export your interior as a PDF with separate pages.
 

Last-minute changes? Recalculate!

Are you adding extra pages to your book? Or are you changing the paper type or weight, for example? No problem, of course, but keep in mind that this will affect the spine thickness and cover design. Once all changes have been made, you will need to recalculate the spine thickness. Just visit our calculator and you’re good to go!

Are you ready to calculate the spine thickness of your book? You can find our spine thickness calculator via this simple link: buroform.be/rugdikte

 

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