Child & Family Health calculators

Growth, dosing and daily needs for kids.

Mid-parental height estimate for your child.

Weight-based paracetamol dose for fever or pain.

Weight-based ibuprofen dose for children over 6 months.

How much milk your baby needs each day.

Daily fluid needs by weight (Holliday-Segar).

Daily energy needs for ages 3–18.

Recommended sleep for your child’s age.

Compare weekly screen time with age guidelines.

Adjusted age for babies born early.

Daily fluid needs for children and teens.

Related guides

The mid-parental method and its limits.

Dose by weight, use the right measuring device and know when to call a doctor.

Typical feeding volumes and the cues that matter more than numbers.