20cm是多少inch？
20cm = 7.874inch
把7.874inch四捨五入成8inch會差1.6%。這個數值下最好保留小數。
反過來，20inch是多少cm？
20inch = 50.8cm
計算公式: inch = cm × 0.393701
該數值前後的 cm → inch
2 cm0.787inch
4 cm1.575inch
6 cm2.362inch
8 cm3.15inch
10 cm3.937inch
12 cm4.724inch
14 cm5.512inch
16 cm6.299inch
18 cm7.087inch
20 cm7.874inch
22 cm8.661inch
24 cm9.449inch
26 cm10.236inch
28 cm11.024inch
30 cm11.811inch
32 cm12.598inch
34 cm13.386inch
36 cm14.173inch
38 cm14.961inch
40 cm15.748inch