- Body Composition Calculator
- Metabolism Calculator
- Nutrition Calculator
- Heart Health Calculator
- Pregnancy Calculator
- Fitness Calculator
-
Pregnancy Calorie Needs CalculatorEstimate daily calorie needs during pregnancy by trimester. Uses Mifflin-St Jeor TDEE plus standard +340/+452 kcal add-ons. General guidance only.
-
Pregnancy Weeks to Months CalculatorConvert pregnancy weeks to months instantly and find your trimester. Enter how many weeks pregnant you are to see months and the matching trimester.
-
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.
-
Period CalculatorPredict your next period start date, see your current cycle day, and view a multi-month calendar marking predicted period days based on your last period and cycle length.
-
Conception Date CalculatorEstimate your conception date and fertile window from a due date, ultrasound, last period (LMP), or birth date using the standard 266/280-day obstetric convention.
-
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).
-
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).
-
APGAR Score CalculatorCalculate a newborn's APGAR score (0-10) from five signs: Appearance, Pulse, Grimace, Activity and Respiration. Quick clinical assessment tool.
-
Birth Weight Percentile CalculatorCalculate a newborn's birth weight percentile and z-score for gestational age and sex using normal-distribution reference values.
-
Gestation CalculatorEstimate the due date by adding a gestation period (in days) to the conception date. Works for humans and animals with custom gestation lengths.
-
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.
-
Endotracheal Tube Size CalculatorEstimate pediatric endotracheal tube (ETT) internal diameter and oral insertion depth by age using the cuffed and uncuffed age-based formulas.
-
Adjusted (Corrected) Age CalculatorCalculate a premature baby's corrected (adjusted) age from chronological age and gestational age at birth. Free, instant, in weeks and months.
-
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.
-
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.
-
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.
-
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.
-
Mean Sac Diameter CalculatorCalculate Mean Sac Diameter (MSD) from gestational sac length, width and height, and estimate early gestational age in days and weeks.
-
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.
-
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.
-
Implantation Date CalculatorEstimate your most likely implantation date from your ovulation date. Implantation typically occurs 6–12 days after ovulation, peaking around day 9.
-
Clomid Ovulation CalculatorEstimate ovulation date and fertile window after Clomid (clomiphene). Enter your last pill date to project ovulation ~5–10 days later, plus or minus 3 days.
-
Fundal Height CalculatorEstimate expected fundal height in cm from gestational age. Get the normal range (weeks ± 2 cm) to compare with a clinical measurement.
-
Fertility by Age CalculatorEstimate your monthly and yearly chance of conceiving naturally based on age, using typical fertility rates for women under 30 up to over 40.
