Due Date Calculator
Free Pregnancy Due Date Calculator - Track Your Pregnancy
Enter your last menstrual period or conception date to calculate your due date, current pregnancy week, trimester, and key milestones.
💡 What is Due Date Calculation?
Due date is calculated using Naegele's rule: add 280 days (40 weeks) from the first day of the last menstrual period (LMP). From conception date, add 266 days (38 weeks). Most births occur within 2 weeks of the estimated due date.
📝 How to Use
- Choose between Last Menstrual Period or Conception Date mode
- Enter the date
- Due date and current pregnancy week are calculated automatically
- Review progress and key milestones
🔧 Pregnancy Tips
- Confirm exact due date with ultrasound
- Delivery within 2 weeks of due date is normal
- Folic acid is especially important in the first trimester
- Attend regular prenatal checkups
- Light exercise during pregnancy is beneficial
📚 各地区计算规则说明
计算逻辑
采用公开的金融、贷款、比率与单位换算标准公式。
参考范围
参考公开标准与各地区常见实务规则。
前提条件
税费、费率、上限会因地区和机构而不同。
结果解读
结果可作为基准情景。正式决策前请与当地机构报价和税务规则对比。
地区默认值
货币: CNY
单位: metric
税务模型: US payroll estimate
法规提示
本工具基于地区预设进行估算。实际合同条款与法定上限可能因机构和当地法规而不同。
建议操作
- 正式申请前请至少比较 2~3 家本地机构方案。
- 再次核对费用、税务处理和提前还款条款。
- 用利率 +1~2% 与收入下降场景再测一次。
做真实决策前，请先确认当地机构的最新条款。