Baby Weight Percentile Calculator
Enter or select: sex, age in months or date of birth where offered, weight, units, WHO or CDC reference.
Baby Tools with Cited Sources
Free Baby Calculator Tools
Choose a tool for growth measurements, everyday care, pregnancy dates or names.
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Results are for reference only and not medical advice. Always consult with healthcare professionals for medical concerns.
Featured Tools
Explore baby calculators by need
Choose a calculator for growth checks, daily care planning, pregnancy dates, or lighter family questions.
Growth & Percentiles
Compare growth measurements, understand developmental ages and prepare a printable growth table.
Baby Height Percentile Calculator
Enter or select: sex, age in months or date of birth where offered, length or height, units, WHO or CDC reference.
Baby Head Circumference Calculator
Enter or select: sex, age in months or date of birth where offered, head circumference, units, WHO or CDC reference.
Baby BMI & Weight-for-Length Calculator
Enter or select: sex, age in months or date of birth where offered, weight, length or height, units, WHO or CDC reference.
Corrected Age Calculator for Preterm Babies
Enter or select: date of birth, gestational weeks.
Baby Developmental Milestone Checker
Enter or select: age in months.
Baby Teething Tracker
Enter or select: age in months.
Printable Baby Growth Chart
Enter or select: baby name, sex, units.
Daily Care
Calculate daily needs like milk, diapers, and sleep
Baby Milk Intake Calculator
Enter or select: weight, units.
Baby Vaccination Schedule
Enter or select: country.
Baby Sleep Schedule Calculator
Enter or select: age in months.
Baby Diaper Needs Calculator
Enter or select: weight in kg, number of days.
Baby Calorie & Solids Introduction Calculator
Enter or select: age in months, weight in kg.
Breastfeeding & Pumping Tracker
Enter or select: sessions per day, average ml per session.
Pregnancy
Track pregnancy progress and fetal development
Fun & Names
Predict eye color, check name popularity, and more
Why Choose Us?
Made for busy parents who need clear answers
Privacy Safe
Use Cookie settings to enable or turn off usage analytics at any time. Analytics starts only after you allow it. Changing this choice does not erase growth records stored in localStorage. Advertising choices are available through the advertising privacy message when it is displayed.
Reference Transparency
Growth results identify the selected WHO or CDC source, supported age range, and published data version.
Easy to Use
Intuitive interface with instant results, multilingual support for easy use.
Frequently Asked Questions
What is a baby calculator and how to use it?
Baby calculators are educational online tools. Enter the requested information to view estimates such as percentiles, BMI, dates, or developmental guidance, together with relevant limitations and sources.
Is this calculator accurate?
Growth calculations use the WHO or CDC reference selected on the page and show its source and supported ages. Results are educational and do not replace medical advice.
What does baby percentile calculator do?
Baby percentile calculators use WHO/CDC growth charts to show how your baby's development compares to peers. Percentiles indicate what percentage of babies your child exceeds in weight, height, or head circumference measurements.
How to use for premature babies?
The corrected-age tool shows how early birth affects developmental age. Keep chronological age and corrected age in your records; vaccination schedules use chronological age unless local guidance says otherwise.
What features are available?
The suite includes 18 educational tools: weight percentile, height percentile, head circumference, BMI, corrected age, milk intake, eye color, developmental milestones, vaccination schedules, teething, name popularity, sleep, diapers, due date, fetal weight, solids, and breastfeeding tracking.