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":
Beitzel, Mr Daniel
(1858 - 1937 bur.Reading, Berks, Pennsylvania, United States of America)
         ├─Beitzel, Mr Charles
(16 Jan 1888 - 31 Aug 1941 bur.Tuckerton, Berks, Pennsylvania, United States of America)
         │          └─Beitzel, Mr Bruce Carl
(14 Mar 1916 - 6 Aug 1976 bur.Tuckerton, Berks, Pennsylvania, United States of America)
         │           + Balliet Beitzel, Mrs Martha Irene
(1 Jun 1915 - 3 Mar 1995 bur.Tuckerton, Berks, Pennsylvania, United States of America)
         └─Beitzel, Mr George Daniel
(23 Nov 1889 Philadelphia, Philadelphia, Pennsylvania, United States of America -           1 Jun 1958 Reading, Berks, Pennsylvania, United States of America)
          Frantz Beitzel, Mrs Beulah E
(23 Feb 1891 Schuylkill, Pennsylvania, United States of America -           2 Apr 1965 The Reading Hospital, Reading, Berks, Pennsylvania, United States of America)
                   └─Beitzel, Mr George V
(18 Feb 1915 Reading Township, Adams, Pennsylvania, United States of America -                     22 Jul 2010 The Lutheran Home at Topton, Topton, Berks, Pennsylvania, United States of America)
                    Zuber Beitzel, Mrs Pearl M
( - 23 Aug 1998)