The paper length is not relevant since the chart flows from one page to the next.
Mobile
in.
mm
Staand
2.75
70
For smart phones, not for printing
Liggend
5.5
140
For smart phones, not for printing
International
in.
mm
A5 Staand
5.82
148
A4 Staand
8.25
210
Also A5 Liggend
A4 Liggend
11.71
297
Also A3 Liggend
A3 Liggend
16.54
420
USA & Canada
in.
mm
Letter Staand
8.5
216
Also Legal Staand
Letter Liggend
11
279
Legal Liggend
14
356
Also Ledger Staand
Ledger Liggend
17
432
The Text+ programs assume that the right and left margins are each about 25mm (1/2 inch) wide.
On the Format for Printing page, differences in page margins can be accommodated by the "fudge factor":
           ├─Helena Antheunissen (Vlissingen;6 dec 1808 - 15 jan 1890)
           ├─Pieternella Dana Antheunissen (Vlissingen;25 okt 1810 - 30 jan 1886)
           ├─Carel Joseph Antheunissen (Vlissingen;8 aug 1813 - 15 sep 1844)
           ├─Christiaan Hendrik Antheunissen (2 okt 1816 Vlissingen - 1 jul 1846 In Zee)
           ├─Johanna Jacoba Antheunissen (Vlissingen;13 feb 1819 - 28 jun 1870)
           │ Jan David Peters (ged.11 dec 1815 Cowes, Isle of Wright ENGLAND - 18 jul 1855 Vlissingen)
           │ (huw. 1 nov 1837 Vlissingen)
           │    ├─Jan Daniel Peters (Vlissingen;4 dec 1838 - 16 feb 1911) =>
           │    │ + Jozina Geertruida Reuse (31 jan 1840 Koudekerke - 14 dec 1890 Vlissingen)
           │    │ (huw. 12 nov 1861 Koudekerke)
           │    ├─Willem Peters (7 jan 1840 Vlissingen - 2 mei 1898 's Gravenhage) =>
           │    │ + Catharina Anna Agelink van Rentergem (8 feb 1847 Middelburg - 4 mrt 1917 's Gravenhage)
           │    │ (huw. 17 okt 1866 Middelburg)
           │    └─Gustaaf Adolph Peters (25 nov 1841 Vlissingen - 17 jul 1878 Oost- en West Souburg) =>
           │     + Adriana Anna Agelink van Rentergem (Middelburg;13 feb 1842 - 16 apr 1923)
           │     (huw. 8 mrt 1865 Middelburg)