250pt是多少mm？
250pt = 88.194mm
是88.194mm，所以说成88mm也没问题——四舍五入的误差在0.5%以内。
反过来，250mm是多少pt？
250mm = 708.661pt
计算公式: mm = pt × 0.352778
该数值前后的 pt → mm
70 pt24.694mm
90 pt31.75mm
110 pt38.806mm
130 pt45.861mm
150 pt52.917mm
170 pt59.972mm
190 pt67.028mm
210 pt74.083mm
230 pt81.139mm
250 pt88.194mm
270 pt95.25mm
290 pt102.306mm
310 pt109.361mm
330 pt116.417mm
350 pt123.472mm
370 pt130.528mm
390 pt137.583mm
410 pt144.639mm
430 pt151.694mm
450 pt158.75mm