Pregnancy
Date pregnancy milestones and compare weight gain with published guideline ranges.
Due Date Calculator
Estimate a due date from a last menstrual period, a conception date or an IVF transfer, using the ACOG method.
Ovulation Calculator
Estimate ovulation and the fertile window by counting back from your next expected period, not forward from your last.
Conception Date Calculator
Work backwards from a due date, a last period or a gestational age to the window in which conception is likely to have happened.
Pregnancy Weight Gain Calculator
See the IOM recommended total weight gain for your pre-pregnancy BMI, and what that implies by a given week.
Period Calculator
Estimate when your next six periods start from the first day of your last one and your average cycle length.
Pregnancy dates and weight-gain ranges are conventions for planning and discussion, not measurements of fetal development or maternal health. Due dates based on the last menstrual period assume a 280-day gestation, ovulation estimates assume the cycle information entered, and guideline ranges depend on pre-pregnancy BMI. These calculators state those assumptions and never infer that a pregnancy is progressing normally. Clinical dates, symptoms and weight concerns belong with a qualified maternity-care professional.