HomeCalcPro — 项目计算详细报告
Tool: Pregnancy Week Calculator — 免费在线计算器 | HomeCalcPro | 打印时间:
健康与健身塑形Pregnancy隐私至上
Pregnancy Week Calculator — 免费在线计算器 | HomeCalcPro
Pregnancy Week Calculator精准计算，提供行业标准公式与即时测算结果。
Parameters & Body Metrics
Health & Fitness Targets
Evidence-BasedPrimary Target
0
Calculated for your body parameters
Metric 1—
Metric 2—
Health Guidelines:
Enter your parameters above to compute your target metrics.
Pregnancy Gestational Week Formula
Transparent mathematical methodology explained in plain English.
Current Week = (Today - LMP Date) / 7 Days | Trimester 1: Wks 1-13 | Trimester 2: Wks 14-27 | Trimester 3: Wks 28-40Calculates completed gestational weeks and remaining days based on Naegele's standard 40-week pregnancy rule.
Variables Explained:
- First Day of Last Period (LMP): Date menstrual cycle began.
Real Project Example
LMP Date 18 Weeks Ago (126 Days)
Determining exact gestational age and trimester.
Sample Project Inputs:
LMP Date:18 Weeks Ago
Step-by-Step Calculation:
- Completed Weeks: 18 Weeks and 0 Days.
- Current Trimester: Second Trimester (Weeks 14 to 27).
- Fetal Size Comparison: Approx size of a bell pepper (~5.6 inches, 6.7 oz).
- Remaining Time: 22 Weeks (154 Days) until 40-week due date.
Calculated Answer:18 Weeks 0 Days Pregnant (2nd Trimester, 45% complete).
Knowledge Base
常见问题解答 (FAQ): Pregnancy Week Calculator
Click any question below to expand quick answers, formulas, and expert tips.
What are the three pregnancy trimester boundaries?
First Trimester: Conception to Week 13; Second Trimester: Week 14 to Week 27; Third Trimester: Week 28 to Week 40+.
What percentage of babies are born exactly on their due date?
Only approximately 4% to 5% of babies are born on their exact calculated due date; most healthy births occur between weeks 37 and 42.