👶 胎儿体重估算Fetal Weight Estimator
按宫高与腹围用产科教材常用的经验公式（宫高 × 腹围 + 200 g）估算胎儿体重，仅作参考，不能替代超声与医生评估。本地处理。Estimates fetal weight from fundal height and abdominal girth with the rule of thumb used in Chinese obstetrics textbooks (fundal height × abdominal girth + 200 g). For reference only; it does not replace ultrasound or a clinician. Processed locally.
使用说明与常见问题How-to & FAQ
「胎儿体重估算」是什么？What is the Fetal Weight Estimator tool?
按宫高与腹围用产科教材常用的经验公式（宫高 × 腹围 + 200 g）估算胎儿体重，仅作参考，不能替代超声与医生评估。本地处理。Estimates fetal weight from fundal height and abdominal girth with the rule of thumb used in Chinese obstetrics textbooks (fundal height × abdominal girth + 200 g). For reference only; it does not replace ultrasound or a clinician. Processed locally.
如何使用「胎儿体重估算」？How do I use the Fetal Weight Estimator tool?
填写宫高和腹围（厘米），即可得到胎儿体重的粗略估算。不能用作诊断。结果会随输入实时更新。Enter the fundal height and abdominal girth in cm to get a rough fetal-weight estimate. Not for diagnosis. The result updates as you type.
公式是什么？What formula is used?
胎儿体重（g）≈ 宫高（cm）× 腹围（cm）+ 200，这是国内产科教材常用的床旁估算法。例如宫高 30 cm、腹围 90 cm 时约 2900 g。Fetal weight (g) ≈ fundal height (cm) × abdominal girth (cm) + 200, a bedside estimate common in Chinese obstetrics textbooks. For example 30 cm and 90 cm give about 2,900 g.
结果准吗？How accurate is it?
只是粗略估算，误差常在 ±10–15% 以上，不能替代超声与产科评估。Only a rough estimate, often off by ±10–15% or more; it does not replace ultrasound or obstetric care.
输入范围？Input ranges?
宫高 15–45 cm，腹围 60–130 cm；超出范围会提示而不计算。Fundal height 15–45 cm and abdominal girth 60–130 cm; values outside these show a message instead of a result.
结果可以代替医生的建议吗？Can this replace medical advice?
不能。「胎儿体重估算」基于常用公式给出估算，个体差异较大，如有健康问题请咨询医生或专业人士。No. The Fetal Weight Estimator gives estimates from common formulas; individuals differ, so consult a doctor or professional for health decisions.
「胎儿体重估算」免费吗？需要注册吗？Is the Fetal Weight Estimator free? Do I need an account?
「胎儿体重估算」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Fetal Weight Estimator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.