如何计算Gestation

learn.whatIsHeading

A gestation calculator estimates the due date or gestational age for humans and animals based on the breeding date or last menstrual period. Gestation length varies significantly by species — from 16 days (hamsters) to 660 days (elephants).

分步指南

1. 1Human: 280 days from LMP (40 weeks), or 266 days from conception
2. 2Add gestation length to breeding/conception date to find due date
3. 3Gestational age = days elapsed since LMP or conception
4. 4First trimester: 0–13 weeks; Second: 14–26; Third: 27–40

例题解析