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":
Julius Heinrich Wilhelm ULLRICH
(29 Apr 1881 Ebenezer, South Australia, Australia - 23 Apr 1960 Perth, Western Australia, Australia)
Alwine Maria Bertha SCHUMACHER (25 Apr 1886 Sedan, South Australia, Australia - 22 Jan 1922 Renmark, South Australia, Australia)(m. 20 Oct 1904 Rhine Villa, South Australia, Australia)
└─Leslie Arthur ULRICH (13 May 1908 Stockwell, South Australia, Australia - DECEASED)
Daphne Maud BRAND (20 Apr 1914 Northampton, Western Australia, Australia - 19 Apr 1972 Geraldton, Western Australia, Australia)(m. 22 Oct 1938 Geraldton, Western Australia, Australia)
1881 - 1960 (78 years)
Alwine Maria Bertha SCHUMACHER 
(25 Apr 1886 Sedan, South Australia, Australia -