Pregnancy & Fertility Calculators
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Pregnancy
Due Date Calculator
Estimate your baby’s due date from your last menstrual period, conception, or ultrasound.
Pregnancy Week Calculator
Find out how many weeks pregnant you are and which trimester you are in.
Gestational Age Calculator
Calculate gestational age in weeks and days from the last menstrual period or ultrasound.
Pregnancy Weight Gain Calculator
Track recommended pregnancy weight gain by week based on your pre-pregnancy BMI.
hCG Doubling Time Calculator
Calculate the doubling time of your hCG levels from two beta hCG blood tests.
Pregnancy Trimester Calculator
Find your current trimester and its date ranges from your last menstrual period.
Maternity Leave Calculator
Plan your maternity leave start and return dates from your due date.
Fertility
Ovulation Calculator
Estimate your fertile window and ovulation day from your last period and cycle length.
Conception Date Calculator
Estimate the likely date of conception from a due date or last menstrual period.
Period Calculator
Predict your next periods and cycle dates from your average cycle length.
Implantation Calculator
Estimate your implantation window and date from ovulation or your last period.
Safe Period Calculator
Estimate lower-fertility days of your cycle using the calendar (rhythm) method.