Pregnancy

Pregnancy calculators estimate key dates and milestones from the information you already have. The pregnancy due date calculator counts forward from the first day of your last period, the conception calculator estimates a likely conception date, and the pregnancy week calculator shows how far along you are.

If you are trying to conceive, the ovulation calculator estimates your fertile window from cycle length, and the period calculator predicts upcoming period dates. During pregnancy, the pregnancy weight gain calculator compares your gain with the Institute of Medicine ranges for your pre-pregnancy BMI.

Cycles and pregnancies vary, so every result is an estimate. Ultrasound dating and your midwife or doctor give the dates that matter for your care. Use these tools to plan questions for appointments, not to replace them, and seek care promptly if anything worries you.