衝 擊 強 度
ft-lb/in J/m kg-cm/cm
1 53.35 5.45
0.0187 1 0.102
0.183 9.803 1
抗折、抗張、耐壓縮強度及模數
MPa Psi kg/cm2 kg/m2
1 145 10.19 101945.15
6.9×10-3 1 0.0703 703.07
9.8×10-2 14.22 1 10000
9.8×10-6 1.422.×10-3 0.0001 1
英 制 (British) 米 制

(Metric) 國 際 制
(SI Metric)
1 ft =0.3048 m
1 in =2.54cm =25.4mm
1 thou =0.0254 mm =25.4μm
1 yd2 =0.8361 m2
1 ft2 =0.0929 m2
1 in2 =6.4516 cm2 =654.16 mm2
1 yd3 =0.7645 m3
1 ft3 =0.0283 m3 =28.317 dm3
1 in3 =16.387 cm3
1 gal =4.5459 litres =4.5459 dm3
℉ =(1.8×℃)+32
1 ton =1.0160 tomes
1 lb =0.4536 kg
1 oz =28.3495 g
1 lbf =0.457 kgf 4.4482 N
1 lbf/in2 =0.0703kgf/cm2 =6.8948kN/m2
1 lb/ft3 =16.018 kg/m3
1 lb/in3 =27.68 g/cm3 =27.68 Mg/m3
1 Btu =251.996 cal =1.0550 KJ

米 制(Metric) 英 制
(British) 國 際 制
(SI Metric)
1 m =3.2808 ft
1 cm =0.3937 in
1 mm =0.03937 in
1 m2 =1.1959 yd2
1 m2 =10.7639 ft2
1 cm2 =0.1550 in2
1 m3 =1.3079 yd3
1 m3 =35.3147 ft3
1 cm3 =0.061 in3
1 litre =0.2199 gal =1 dm3
1 cm3 =0.0000353 ft3
℃ =((℉-32)×5)÷9
1 tonne =0.9842 ton
1 kg =2.2046 lb
1 g =0.0353oz
1 kgf =2.2046 lbf =9.8066 N
1 kgf/cm2 =14.2233 lbf/in2 =98.0665kN/m2
1 kg/m3 =0.0624 lb/ft3
1 g/cm3 =0.0361 ib/in3