年龄精确计算 / 预产期计算
免费在线年龄计算器，精确到年月日小时；同时提供基于末次月经的预产期（EDD）计算与孕周展示
Age
Due date
Birthday
Reference time
30
years
0 months · 0 days · 0 hours
Total days
10,957
Total hours
262,968
Total weeks
1,565
Nominal age
31
Next birthday
2026-04-30
0 days from now
User Guide
✨ Features
• Precise age in years + months + days + hours • Total days / hours / weeks / nominal age / next birthday • EDD via Naegele's rule • Adjustable cycle length • Live updates, all local
📖 How to Use
Step 1
In Age tab, pick birthday and reference time
Step 2
In Due Date tab, pick last menstrual period and cycle length
Step 3
Cards show precise age / gestational age / EDD
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