孕期与备孕
基于WHO、NHS、ACOG和ACSM参考标准的身体成分、营养、孕期和心脏健康计算器。
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Gestational Age Calculator
Find out how many weeks pregnant you are from your last period or due date. Shows trimester, estimated due date and days remaining, per ACOG dating.
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预产期计算器
根据末次月经、受孕日期或试管移植日期,依照ACOG奈格尔法则和ASRM惯例估算您的预产期。免费工具。
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Ovulation Calculator
Find your ovulation date and six-day fertile window from your last period and cycle length. Based on Wilcox et al. NEJM 1995. Free, private, no sign-up.
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Fertility Window Calculator
Calculate your broadest possible fertile window from a range of cycle lengths. Designed for irregular cycles using earliest and latest ovulation estimates.
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Conception Date Calculator
Estimate when conception likely occurred from your due date or birth date. Uses the 266-day (EDD minus 266) reverse formula with a ±3-day window.