磅(lb，pound)是英国与美国常使用的英制质量单位，英制质量系统对磅产生过许多不同的定义，例如金衡磅、商人磅、公制磅、国际磅等，现在最普遍被使用的定义是国际常衡磅。
吨吨（tonne）又称公吨，符号为t。吨是最大的通用国际标准计量单位。其虽非国际单位制（SI）基本单位之一，但符合十进位制，在使用上是可以与国际单位制相合。
磅转吨换算表磅 (lb)吨 (t)0.1 lb0.0000453592 t0.5 lb0.000226796 t1 lb0.000453592 t1.5 lb0.000680389 t2 lb0.000907185 t3 lb0.00136078 t4 lb0.00181437 t5 lb0.00226796 t6 lb0.00272155 t7 lb0.00317515 t8 lb0.00362874 t9 lb0.00408233 t10 lb0.00453592 t11 lb0.00498952 t12 lb0.00544311 t13 lb0.0058967 t14 lb0.00635029 t15 lb0.00680389 t16 lb0.00725748 t17 lb0.00771107 t18 lb0.00816466 t19 lb0.00861826 t20 lb0.00907185 t25 lb0.0113398 t30 lb0.0136078 t35 lb0.0158757 t40 lb0.0181437 t45 lb0.0204117 t50 lb0.0226796 t磅 (lb)吨 (t)55 lb0.0249476 t60 lb0.0272155 t65 lb0.0294835 t70 lb0.0317515 t75 lb0.0340194 t80 lb0.0362874 t85 lb0.0385554 t90 lb0.0408233 t95 lb0.0430913 t100 lb0.0453592 t150 lb0.0680389 t200 lb0.0907185 t250 lb0.113398 t300 lb0.136078 t350 lb0.158757 t400 lb0.181437 t450 lb0.204117 t500 lb0.226796 t550 lb0.249476 t600 lb0.272155 t650 lb0.294835 t700 lb0.317515 t750 lb0.340194 t800 lb0.362874 t850 lb0.385554 t900 lb0.408233 t950 lb0.430913 t1000 lb0.453592 t5000 lb2.26796 t
