Pregnancy & Women’s Health calculators

Due dates, ovulation and healthy gestation.

Estimated due date from your last period.

Work backwards from a due date to when you conceived.

Predict ovulation day and your most fertile days.

Weeks and days pregnant on any date.

Recommended weight gain by week using IOM guidance.

Extra daily calories needed by trimester.

Average cycle length, regularity and next period.

Due date from your embryo transfer date.

Calories and fluids needed while nursing.

Simple bone density screening score for women.

Related guides

Naegele’s rule, ultrasound dating and why only 4 percent of babies arrive on the day.

Timing intercourse in the six days before and on ovulation boosts chances.

How much to gain depends on your pre-pregnancy BMI.