- Body Composition Calculator
- Metabolism Calculator
- Nutrition Calculator
- Heart Health Calculator
- Pregnancy Calculator
- Fitness Calculator
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Pregnancy Week CalculatorFind your gestational age in weeks and days on any date, calculated from your last menstrual period (LMP) or estimated due date (EDD).
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Due Date Calculator from Last Menstrual PeriodEstimate your pregnancy due date from the first day of your last menstrual period (LMP) using the standard 280-day / 40-week rule (Naegele's rule).
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Ovulation CalculatorCalculate your ovulation date with this Ovulation Calculator. Input your last period start date and average cycle length to determine fertile days and plan for conception or contraception effectively.
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Breastfeeding Calorie CalculatorEstimate how many calories you need per day while breastfeeding. Uses Mifflin-St Jeor BMR, your activity level, and a lactation calorie add.
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Bishop Score CalculatorCalculate the Bishop Score (0–13) for cervical ripeness from dilation, effacement, station, consistency, and position to assess labor induction success.
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Birth Weight Percentile CalculatorCalculate a newborn's birth weight percentile and z-score for gestational age and sex using normal-distribution reference values.
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Diaper CalculatorFree diaper calculator estimates how many diapers your baby needs over any period and the total cost based on diapers per day and price per diaper.
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Baby & Toddler Sleep Needs CalculatorFind how many hours of sleep your baby or toddler needs by age. Get total daily sleep plus a suggested night-sleep target based on nap hours.
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Baby's Milk Intake CalculatorEstimate your baby's daily milk or formula intake by weight. Calculate mL per day and per feed using the standard 100-200 mL/kg/day guideline.
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Baby Height Predictor CalculatorPredict your child's adult height from the parents' heights using the mid-parental height formula. Estimate boys and girls in centimeters instantly.
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Baby Formula CalculatorEstimate how much infant formula your baby needs per day and per feed based on body weight. Quick, simple guide for parents and caregivers.
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Baby Eye Color Predictor CalculatorPredict your baby's eye color probabilities (brown, green, blue) from both parents' eye colors using a simplified Mendelian genetics model.
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Baby Age in Weeks and Months CalculatorFind your baby's age in weeks, days and whole months from their date of birth. Quick, accurate infant age calculator for any "as of" date.
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Baby Age CalculatorCalculate a baby's exact age in total days, weeks, weeks-plus-days, and calendar months-plus-days from birth date to any as-of date.
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Animal Gestation Due Date CalculatorEstimate the due, birth or hatch date of cows, pigs, sheep, goats, horses, dogs, cats and more from a breeding date, or work backward to find a breeding date.
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APGAR Score CalculatorCalculate a newborn's APGAR score (0-10) from five signs: Appearance, Pulse, Grimace, Activity and Respiration. Quick clinical assessment tool.
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Twin Pregnancy Weight Gain CalculatorEstimate recommended total and weekly weight gain for a twin pregnancy based on your pre-pregnancy BMI, using IOM guideline ranges.
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Endotracheal Tube Size CalculatorEstimate pediatric endotracheal tube (ETT) internal diameter and oral insertion depth by age using the cuffed and uncuffed age-based formulas.
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Exclusive Pumping CalculatorEstimate how much breast milk to pump per session and per day for an exclusively pumped baby, based on weight and number of pumping sessions.
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Reverse Due Date CalculatorWork backward from a due date to estimate your conception date and last menstrual period (LMP). Free reverse due date calculator using a 280-day pregnancy.
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Mean Sac Diameter CalculatorCalculate Mean Sac Diameter (MSD) from gestational sac length, width and height, and estimate early gestational age in days and weeks.
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Luteal Phase Length CalculatorCalculate your luteal phase length in days from your ovulation date and next period start date, and see whether it falls in the normal range.
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IVF Due Date CalculatorCalculate your IVF pregnancy due date from the embryo transfer date and embryo age (Day-3, Day-5, or Day-6). Estimates a 40-week gestation due date.
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Implantation Date CalculatorEstimate your most likely implantation date from your ovulation date. Implantation typically occurs 6–12 days after ovulation, peaking around day 9.
