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Baby & Parenting Calculators
Free pregnancy and parenting calculators for due date, baby growth percentiles, feeding schedules, sleep guides, diaper costs, and height prediction. WHO-backed data.
Baby & Parenting Calculators
Pregnancy planning, infant care, and child development tools backed by WHO and pediatric data.
Due Date Calculator
Estimate your baby's due date from last period or conception.
Baby Growth Percentile
WHO-based height and weight percentiles for your baby.
Baby Feeding Calculator
Formula and breastmilk intake by age and weight.
Baby Sleep Calculator
Recommended sleep windows and nap schedules by age.
Diaper Cost Calculator
Monthly and yearly diaper spend by brand and stage.
Baby Name Numerology
Numerology profile for any baby name.
Child Height Predictor
Adult height estimate based on parental heights.
Related Guides
How to Use This Calculator
- Choose a baby or parenting calculator below.
- Enter your baby's age, weight, or measurements.
- Get personalized guidance backed by WHO and pediatric research.
The Formula
Growth percentiles use WHO Child Growth Standards. Due date uses Naegele's rule. See individual pages for details.Learn More
Frequently Asked Questions
We use WHO Child Growth Standards (2006), the global gold standard for infant growth assessment from birth to 24 months.