Free pregnancy and baby tools
Quick, private calculators for the months ahead. Everything runs in your browser; nothing you type leaves your device.
Pregnancy
- Due date calculatorWhen is the baby due? From your last period, conception date or IVF transfer.
- Pregnancy week calculatorHow many weeks pregnant are you? Your week, trimester and what is happening now.
- Conception date calculatorWhen did the pregnancy start? Work it out from a due date or a birth date.
- Ovulation calculatorYour fertile days and likely ovulation date, for this cycle and the next six.
- Pregnancy weight gain calculatorHow much weight gain is typical for you, by BMI, for one baby or twins (IOM 2009).
- Chinese gender predictorWhat the old Chinese gender chart says about your baby, from lunar age and month.
- Chance of twins calculatorHow likely are twins for you? The odds by age, twins in the family and fertility treatment.
Genes and looks
- Baby blood type calculatorWhich blood groups and Rh factors your baby could have, and how likely each one is.
- Baby eye colour calculatorBrown, green or blue? The odds for your baby's eye colour from a two-gene model.
- Baby hair colour calculatorBlack, brown, blond or red? The odds for your child's hair colour.
- Child height predictorHow tall will your child be? An adult height estimate from both parents' heights.
Baby
- Baby age calculatorHow old is your baby in days, weeks and months? With corrected age for preemies.
- Baby zodiac sign and birthstoneYour baby's star sign, birthstone and birth flower from the due date or birthday.
- Baby name generatorPopular and classic names with meanings, filtered by gender, origin, letter and length.
- Baby names from both your namesReal names that start like one parent's name and end like the other's.
- Baby growth percentile calculatorWeight, length and head size percentiles from birth to 5, on the WHO growth standards.
Curious what your baby will look like?
Add a photo of each of you and see a possible face in about 20 seconds. First preview free.