Baby Calculators
Baby formula, feeding interval, infant growth percentile, and vaccine schedule. Everything new parents need for newborn and infant care, free and with no install or sign-up.
Baby Calculators brings together the calculations new parents use most — baby formula amount, feeding interval, growth percentile, and vaccine schedule — in one free, easy-to-use place.
Every calculation runs instantly in your browser; your inputs are never sent to or stored on a server. Results are for general reference only — consult your pediatrician for medical decisions.
Baby Calculators
Baby Formula Calculator
Use your baby's weight and age in months to estimate the recommended daily formula amount and per-feeding amount (about 150 ml per kg of body weight).
Feeding Interval Calculator
Check the recommended feeding interval and number of feedings per day by age, then enter your last feeding time to find the next one.
Infant Growth Percentile Calculator
Estimate your baby's height and weight percentiles based on the WHO Child Growth Standards (0-24 months) using sex, age, height, and weight.
Vaccine Schedule Calculator
Enter your baby's birth date to calculate the recommended due dates for each vaccine on the standard immunization schedule.
Baby Care Guides
Why use Baby Calculators
- Free and instant: calculate right in your browser with no install or sign-up.
- Privacy first: every calculation runs on your device and your inputs are never sent to a server.
- Trusted standards: growth percentiles use the WHO Child Growth Standards and the vaccine schedule follows the standard immunization timeline.
- Mobile friendly: a clean layout that is easy to read with one hand.
All results from Baby Calculators are general medical reference information and do not replace diagnosis or treatment. Always consult a pediatrician for decisions about your baby's health.
For more on how the site is run and kept reliable, see About This Site.
Last updated: 2026-06-25