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Pregnancy & Baby Calculators
Made for You and Your Little One
Free pregnancy calculator, baby calculators and trackers — due dates, ovulation, growth percentiles and more. No jargon, no guesswork, just simple, reassuring tools for you and your little one.
Baby Age Calculator
Exact age in years, months, weeks & days.
Baby Growth Percentile
See how height & weight compare by age.
Due Date Calculator
Estimate your little one’s arrival day.
My Pregnancy Journey
Week, month & weight gain from one due date.
Ovulation Calculator
Find your most fertile days each cycle.
Medicine Dosage
Safe dosing guidance based on weight.
Baby Feeding & Diaper Log
Track feeds and changes through the day.
Screen Time Guidelines
Age-appropriate daily screen time limits.
Chinese Gender Predictor
The traditional lunar calendar boy-or-girl guess.
Baby Eye Color
A simple genetics-based odds estimate.
Baby BMI Calculator
BMI-for-age compared to WHO standards.
Baby Formula Calculator
How much formula or milk, by weight and age.
Baby Cost Calculator
Estimate your first-year budget.
Conception Calculator
Estimate when conception likely happened.
Baby Sleep Calculator
Sleep guidelines and a bedtime estimator.
Period Calculator
When your next period is due — and if it's late.
Weeks to Months
How many months is X weeks pregnant?
Weeks From Today
What date is X weeks from now, or between two dates.
Reverse Due Date
Work backward to your conception date and LMP.
Implantation Calculator
Your implantation window and earliest test date.
IVF Due Date Calculator
Due date from your embryo transfer date.
Pregnancy Wheel
The classic gestational calculator dial, online.
Pregnancy Test Calculator
The earliest day you can reliably test.
Calorie Calculator (& Protein)
Daily needs by trimester and activity level.
Chances of Pregnancy
Fertility odds by age, per cycle and per year.
Weight Gain Calculator
Recommended gain by pre-pregnancy BMI.
Newborn Weight Loss
Percent change and g/day vs. birth weight.
Adult Height Predictor
How tall your child might grow up to be.
Kids Shoe Size Chart
Foot length to EU, UK & US sizes.
Child BMI (& Teen)
BMI-for-age percentile, ages 2–20.
Kindergarten Start Date
When your child is eligible to enroll.
Kids Bike Size Chart
Wheel size by height or age.
Kid Allowance Calculator
Suggested weekly allowance by age.
Diaper Size Calculator
Find the right size by weight, US & EU.
No calculators in this category yet — more coming soon!