The paper length is not relevant since the chart flows from one page to the next.
Mobile
in.
mm
Portrait
2.75
70
For smart phones, not for printing
Landscape
5.5
140
For smart phones, not for printing
USA & Canada
in.
mm
Letter Portrait
8.5
216
Also Legal Portrait
Letter Landscape
11
279
Legal Landscape
14
356
Also Ledger Portrait
Ledger Landscape
17
432
International
in.
mm
A5 Portrait
5.82
148
A4 Portrait
8.25
210
Also A5 Landscape
A4 Landscape
11.71
297
Also A3 Landscape
A3 Landscape
16.54
420
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":
Christiaan Goudschaal
(07 Apr 1813 Beerta, Groningen, Nederland - 26 Oct 1854 Groningen, Groningen, Nederland)
:         └─ Wubke Goudschaal
(24 Jan 1852 Bellingwolde, Groningen, Nederland - 07 Sep 1892 Winschoten, Groningen, Nederland)
:          Jan Vortman
(28 Jul 1854 Westerlee, Scheemda, Groningen, Nederland - 07 Oct 1886 Winschoten, Groningen, Nederland)
:          :         ├─ Ludolf Vortman
(21 Sep 1876 Winschoten, Groningen, Nederland - 22 Feb 1961 Groningen, Groningen, Nederland)
:          :         │ Hillegiena Lammina Meijer
(16 Jul 1880 Groningen, Groningen, Nederland - 26 Nov 1941 Groningen, Groningen, Nederland)
:          :         │          ├─ Wubbiena Vortman
(28 Apr 1906 Groningen, Groningen, Nederland - Yes, date unknown)
:          :         │          │ + Arnoldus Koopen
(Cal 1899 Enkhuizen, Noord-Holland, Nederland - Yes, date unknown)
:          :         │          └─ Hindertje Vortman
(30 Sep 1908 Groningen, Groningen, Nederland - Yes, date unknown)
:          :         └─ Albert Vortman
(02 Sep 1878 Zevenhuizen, Leek, Groningen, Nederland - Yes, date unknown)
:          + Tammo Deters
(14 Sep 1836 Beerta, Groningen, Nederland - 16 May 1916 Oude Pekela, Groningen, Nederland)
+ Jurjen Hindriks Lups
(23 Sep 1798 Finsterwolde, Groningen, Nederland - 28 Nov 1874 Winschoten, Groningen, Nederland)