Free calculators for parents of young children
Quick answers to the questions parents of young children ask most: exactly how old is my child, which class will they join, how tall might they grow, what time should they sleep, and how much screen time is too much? Each calculator below is free, takes less than a minute, and runs entirely on your phone — nothing you enter is saved or shared.
Every calculator comes with a detailed, plain-language guide explaining how the result is worked out, the expert guidelines behind it, and practical next steps for your family.
Kids age calculator
Exact age in years, months and days, total weeks and days, next birthday countdown, half-birthday and corrected age for babies born early.
Open calculator →School admission age calculator
Find whether your child fits pre-nursery, nursery, LKG, UKG or Class 1 for any session and cut-off date, with a five-year class plan.
Open calculator →Child height predictor
Estimate your child's adult height from both parents' heights using the mid-parental method doctors use, in cm or feet and inches.
Open calculator →Kids bedtime calculator
Find the right bedtime from your child's age, wake-up time and naps, based on expert sleep guidelines, plus when to start the routine.
Open calculator →Screen time calculator
Add up your child's daily screen time, see weekly and yearly totals, compare with WHO guidance and see what a small cut frees up.
Open calculator →How we build these calculators
Each calculator uses a published, widely accepted method: calendar-accurate date maths for age, the NEP-aligned admission ages for school classes, the mid-parental (Tanner) formula for height, sleep recommendations from the American Academy of Sleep Medicine endorsed by the American Academy of Pediatrics, and World Health Organization guidance on screen time for young children. They are made for everyday family use and are not a substitute for advice from your child's doctor or school.