Parent calculators
Quick answers to everyday parenting questions
Free, no sign-up, and explained in plain language. Use them to spot patterns, then bring questions to your pediatrician.
Choose the question that fits your child: wake windows and feeding for babies, bedtime and behavior for younger children, or growth and family plans as they get older. Results are estimates to help you prepare for a conversation, not a diagnosis or an individualized care plan.
0–3 years
Wake window & nap schedule
Your baby's age and wake-up time become a day of nap times and a bedtime.
Open0–12 months
Formula & breastmilk estimator
About how many ounces per bottle and per day for your baby's age and weight.
Open1–18 years
Bedtime calculator
Put in the school wake-up time and get the lights-out time for enough sleep.
Open0–20 years
Growth percentile calculator
WHO charts for babies and CDC BMI-for-age for kids, in plain English.
OpenAny age
Adult height estimate
A mid-parent height range based on both parents' heights.
Open1–8 years
Tantrum vs. meltdown decoder
Six quick questions and what to do in the moment.
Open2–18 years
Chore chart generator
Age-appropriate chores for each child, ready to print.
Open5–18 years
Allowance calculator
A weekly amount by age, split into spend, save and give.
Open2–18 years
Screen vs. active time checker
See how a typical day balances screens, movement and sleep.
Open8–14 years
Smartphone readiness quiz
Ten honest questions before the first phone.
Open3–18 years
Dinner conversation cards
Shuffle a question for the table, matched to your kids' ages.
Open1–18 years
Sibling activity matcher
Activities that work for kids with an age gap.
OpenNewborn–16 years
Well-child visit prep
A printable question checklist for your child's next checkup.
OpenBabies–teens
Fever medicine dose helper
Acetaminophen and ibuprofen doses by weight, with safety checks.
OpenBirth–18 years
Growth chart & percentile graph
Plot height, weight, head size and BMI on WHO/CDC curves and print a summary.
OpenBirth–18 years
Vaccine schedule & tracker
Every CDC/AAP shot by age in plain English, with a checklist to print for school.
OpenBabies–teens
Fever & temperature guide
What a temperature means at each age, in °F or °C, and when to call.
OpenTwins/triplets 0–12m
Twin feeding & sleep planner
A synced schedule for two or three babies, fed together or staggered.
OpenExpecting multiples
Buy two vs. share one
Which gear twins need two of, and which one is enough.
Open15–18 years
Teen 50-hour driving log
Log practice drives, track day and night hours, and print or export.
OpenBirth–18 years
Motor skills explorer
Head control to running and balance: what's typical by age and when to call.
Open