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":
Edwin TAPP
(Abt 1871 Shepshed, Leicestershire, England - 8 Jan 1930 Leicestershire, England)
Charlotte FARRAN (Jan 1874 Shepshed, Leicestershire, England - 22 Feb 1958 Leicestershire, England)
(m. Apr 1894 Loughborough, Leicestershire, England)
└─Doris Irene TAPP (18 Jul 1897 Loughborough, Leicestershire, England - 12 Nov 1989)
Charles Edward TOLLEY (12 Nov 1893 Shepshed, Leicestershire, England - 2 Mar 1957 Swan, Western Australia, Australia)(m. 2 Jun 1920 Swan, Western Australia, Australia)
└─Irene Mary TOLLEY (4 Nov 1926 Perth, Western Australia, Australia - 14 Sep 1974 Northam, Western Australia, Australia)
Peter DANN (27 Nov 1927 Perth, Western Australia, Australia - 29 Nov 2017 Geraldton, Western Australia, Australia)(m. 23 Sep 1953 Swan, Western Australia, Australia)
Abt 1871 - 1930 (~ 59 years)
Charlotte FARRAN 
(Jan 1874 Shepshed, Leicestershire, England - 22 Feb 1958 Leicestershire, England)
