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":
Grace Elizabeth PIGHILLS (1863 Oxenhope, Yorkshire, England - 11 Sep 1925 Keighley, Yorkshire, England)
(m. 1898 Keighley, Yorkshire, England)
└─Frank Pighills CARTWRIGHT (1901 Oxenhope, Yorkshire, England - 11 Jun 1976 Perth, Western Australia, Australia)
Bertha May THOMPSON (30 Oct 1905 Day Dawn, Western Australia, Australia - 17 Jan 1995 Perth, Western Australia, Australia)(m. 28 Sep 1932 Perth, Western Australia, Australia)
└─Leon John CARTWRIGHT (Perth, Western Australia, Australia;26 Apr 1932 - 14 Aug 2010)
1867 - 1909 (42 years)
Grace Elizabeth PIGHILLS 
(1863 Oxenhope, Yorkshire, England - 11 Sep 1925 Keighley, Yorkshire, England)
