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Pregnancy & Baby Calculators
Due date, ovulation, pregnancy week, baby growth and parenting calculators. 21 free tools that run in your browser, no sign-up needed.
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Pregnancy Due Date CalculatorFind your due date and how many weeks pregnant you are.Ovulation CalculatorEstimate ovulation and fertile days for the next 6 months.Conception Date CalculatorEstimate when you conceived from your due date, last period or an ultrasound scan.Period CalculatorLog period start dates to predict your next 6 periods, ovulation and fertile days.Child Height PredictorEstimate your child's adult height from both parents' heights with the mid-parental method.Pregnancy Week CalculatorFind how many weeks pregnant you are from your last period, due date or conception.Dog Pregnancy CalculatorFind your dog's due date from the mating date, with a week-by-week pregnancy calendar.hCG Doubling Time CalculatorTwo hCG results and hours apart to doubling time and the equivalent 48-hour rise.IVF Due Date CalculatorIVF due date from a day 3, 5 or 6 embryo transfer or egg retrieval, with weeks pregnant.Baby Formula CalculatorEstimate daily and per-feed baby formula in ml and oz from weight, age and feeds.Cat Pregnancy CalculatorFind your cat’s due date from the mating date, with a week-by-week pregnancy calendar.Baby Sleep Schedule CalculatorNap count, wake windows, nap times and bedtime for your baby's age and wake-up time.Implantation CalculatorEstimate the implantation window, earliest test date and DPO timeline from LMP or ovulation.When to Take a Pregnancy Test CalculatorEarliest and most accurate pregnancy test dates from your last period or the date of sex.Baby Milestone CheckerCheck your baby's developmental milestones by age, 2 months to 5 years, with what comes next.Baby Size by WeekSee your baby's size as a fruit, plus typical length, weight and development, week by week.Baby Weight Gain CalculatorCheck your baby's weight gain per day and week against typical ranges, plus birth weight regain.Breast Milk CalculatorEstimate how much breast milk your baby needs per day and per bottle, in oz and ml.Diaper CalculatorEstimate how many diapers and boxes your baby needs by size, month and first year.hCG Levels by WeekCompare a blood hCG result with the typical range for your week of pregnancy, on a chart.Pack Year CalculatorTotal pack-years from packs or cigarettes per day over several periods, with a screening check.
About Pregnancy & Baby Calculators
Estimate a due date, fertile window, pregnancy week or conception date from the dates you enter. These calculators use standard medical formulas, but every pregnancy is different, so your doctor or midwife's dates always take priority.
Most used here: Pregnancy Due Date Calculator, Ovulation Calculator and Conception Date Calculator.