１級＝
0.71pt=0.25mm
１pt＝
0.71級=0.35mm
１mm＝
４級=2.83pt
近似値(QtoP)
７級≒ 5pt
８級≒ 5.5pt
９級≒ 6.5pt
10級≒ 7pt
11級≒ 8pt
12級≒ 8.5pt
13級≒ 9pt
14級≒ 10pt
15級≒ 10.5pt
16級≒ 11.5pt
18級≒ 13pt
20級≒ 14pt
24級≒ 17pt
28級≒ 20pt
32級≒ 23pt
38級≒ 27pt
44級≒ 31.5pt
50級≒ 35.5pt
56級≒ 40pt
62級≒ 44pt
70級≒ 50pt
80級≒ 57pt