1、英寸與毫米換算英寸（in）（分?jǐn)?shù)英寸）英寸（in）（小數(shù)英寸）毫米（mm）英寸（in）（分?jǐn)?shù)英寸）英寸（in）（小數(shù)英寸）毫米（mm）英寸（in）（分?jǐn)?shù)英寸）英寸（in）（小數(shù)英寸）毫米（mm）英寸（in）（分?jǐn)?shù)英寸）英寸（in）（小數(shù)英寸）毫米（mm）1/20.500012.7003/320.093752.3813/640.0468751.19135/640.54687513.8911/40.25006.3505/320.156253.9695/640.0781251.98437/640.57812514.6843/40.750019.0507/320.218755.5567/640.109

2、3752.77839/640.60937515.4781/80.12503.1759/320.281257.1449/640.1406253.57241/640.64062516.2723/80.37509.52511/320.343758.73111/640.1718754.36643/640.67187517.0665/80.625015.87513/320.4062510.31913/640.2031255.15945/640.70312517.8597/80.875022.22515/320.4687511.90615/640.2343755.95347/640.73437518.65

3、31/160.06251.58817/320.5312513.49417/640.2656256.74749/640.76562519.4473/160.18754.76319/320.5937515.08119/640.2968757.54151/640.79687520.2415/160.31257.93821/320.6562516.66921/640.3281258.33453/640.82812521.0347/160.437511.11323/320.7187518.25623/640.3593759.12855/640.85937521.8289/160.562514.28825

4、/320.7812519.88425/640.3906259.92257/640.89062522.62211/160.687517.46327/320.8437521.43127/640.42187510.71659/640.92187523.41613/160.812520.63829/320.9062523.01929/640.45312511.50961/640.95312524.20915/160.937523.81331/320.9687524.60631/640.48437512.30363/640.98437525.0031/320.031250.7941/640.015625

5、0.39733/640.51562513.09764/641.00000025.4001寸= 8 分 ；1英寸= 25.4毫米 ；1英寸=（25.4*3)/100=0.762寸英寸分?jǐn)?shù)習(xí)慣稱呼公稱通徑DN1/8一分61/4二分83/8三分101/2四分155/8五分3/4六分207/8七分1251 _1/4321 _1/2402502_1/2653803 _1/290410051256150英寸習(xí)慣稱呼毫米英寸習(xí)慣稱呼毫米1/16半分1.58759/16四分半14.28751/8一分3.17505/8五分15.8753/16一分半4.762511/16五分半17.46251/4二分6.353/4六分19.055/16二分半7.937513/1