Pregnancy Weight Gain Calculator
Recommended total weight gain for a single pregnancy from your pre-pregnancy BMI (IOM 2009).
Pregnancy Due Date Calculator
Estimated due date, current week of pregnancy and trimester from your last period.
Your result will appear here
Enter your measurements, then press Calculate.
Methodology
Naegele's rule with cycle-length adjustment (ACOG CO 700)
EDD = LMP + 280 days + (cycle length − 28)
Adds 40 weeks to the first day of the last period, adjusted for cycles longer or shorter than 28 days. Only about 4% of babies arrive on the due date; most are born between 38 and 42 weeks.
- Who it is for
- Pregnant women who know the first day of their last menstrual period.
- Version
- 2.0.0
Limitations
- An ultrasound in the first trimester is the most accurate way to date a pregnancy; if it differs from the LMP date, your clinician will use the ultrasound date.
- Less accurate with irregular cycles, recent hormonal contraception or breastfeeding.
References
- American College of Obstetricians and Gynecologists. Committee Opinion No. 700: Methods for Estimating the Due Date. Obstet Gynecol. 2017;129(5):e150–e154. doi:10.1097/AOG.0000000000002046
Continue with your measurements
Shared measurements carry over automatically, in this tab only.
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