That is what you see in the photo.
Gutter margins sizes.
Inner margin should be 0 75 of the top margin and outer margin should be set at twice the size of inner margin.
Cover width bleed back cover width spine width front cover width bleed cover height bleed trim height bleed.
A standard is to set the left and right margins at a half inch each and to then have a quarter inch gutter.
To change the margins for part of a document select the text and then set the margins that you want by entering the new margins in the page setup dialog box.
A properly designed gutter margin reduces the risk of losing content in the curve of the pages.
Change the margins for top bottom left and right to 1.
This particular book happened to be fairly thick 356 pages so i set the gutter to 0 3 inches.
So what size should my gutter margin be.
However an appointment diary is quite different from a novel or nonfiction book and i would probably reduce the margins to about 5 again with slightly more on the gutter side to compensate for the curve of the binding.
For a more accommodating design the side margins increase as you go up in device width.
And make sure these settings apply to whole document at the bottom by selecting that in the dropdown.
Set the margins as 0 76 on the top bottom and inside and 0 5 on the outside.
A gutter margin can smaller for books with less curve and larger for books with more curve.
Here are the numbers you need to adjust your drainage area number.
Multiply drainage area by 1 05.
Side margins also known as outside gutters are the amount of white space outside of your content width.
Generally speaking 0 5 inches for your gutter margin is recommended for most books.
In book layer traditional margins setup starts with the top margin.
Multiply drainage area by 1 2.
You can also work with a professional who knows the climate in your area and who understands what size of gutter you need to work with the roof that you have.
When you choose size for top margin you double that size for the bottom margin.
Multiply drainage area by 1 1.
Insert the spine measurements selected trim size width and height and the 0 125 3 mm bleed requirement into the following equations to find your cover size.
Multiply drainage area by 1 3.
0 375 in 9 6 mm at least 0 25 in 6 4 mm at least 0 375 in 9 6 mm 151 to 300 pages.
Side margins on mobile are usually 20 30px and vary a lot between tablet and desktop.
To restore the original margin settings click margins and then click custom margins.
In the pages area set it to mirror margins.
12 inches or more.
0 625 in 15 9 mm at least 0 25 in 6 4 mm at least 0 375 in 9 6 mm 501 to 700 pages.
Inside gutter margins outside margins no bleed outside margins with bleed 24 to 150 pages.
0 5 in 12 7 mm at least 0 25 in 6 4 mm at least 0 375 in 9 6 mm 301 to 500 pages.
So if you re doing a physical book make sure you understand what a gutter is and that you set it up.