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  |    |  |   |   |   |  
  |