單位長度的換算

尺寸公分公尺這四個要怎麼換算阿??
長度比較表mmcmMinft寸尺10.10.0010.039370.003280.0330.00331010.010.393710.032810.330.0331000100139.3713.28091333.325.39952.540.025410.083330.838180.08382304.7930.4790.3047912110.058161.0058230.30303.030300.030301.193050.0994210.1303.03030.3030.3030311.93050.994211011818.182181.8181.8181871.5845.9653606