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":
John REEDER
(1802 Pickenham, Norfolk, England - Abt 1879 Norfolk, England)
Mary Ann ALLEN
(1801 Letheringsett, Norfolk, England - 17 Apr 1881 Norfolk, England)
└─Mary Anne REEDER
(1823 Elsing, Norfolk, England - 1890 Norfolk, England)
Christopher NAYLOR
(Abt 1818 Elsing, Norfolk, England - 1903 Eston, Yorkshire, England)
└─Anna NAYLOR
(Jan 1846 Elsing, Norfolk, England - Jan 1913 North Riding, Yorkshire, England)
Henry BUXTON
(26 Nov 1841 Bylaugh, Norfolk, England - Sep 1922 Eston, Yorkshire, England)
└─David Allen BUXTON
(Elsing, Norfolk, England;17 Jul 1869 - 13 Dec 1945)
Edith Maud TREMBATH
(14 May 1879 Guisborough, Yorkshire, England - 1950 Eston, Yorkshire, England)
├─David Allen BUXTON
(21 Jun 1900 Grangetown, Yorkshire, England - DECEASED)
│ + Rose Lena COOK
(8 Sep 1903 Eston, Yorkshire, England - Jun 1965 North Riding, Yorkshire, England)
├─Edith BUXTON
(18 Jun 1901 Skelton, Yorkshire, England - Apr 2002 Eston, Yorkshire, England)
1802 - Abt 1879 (77 years)
(8 Sep 1903 Eston, Yorkshire, England - Jun 1965 North Riding, Yorkshire, England)