Screen time guidelines for under-5s: what the WHO, the AAP, and the Australian Department of Health actually say

"How much screen time is OK for my toddler?" is, according to the Royal Children's Hospital, one of the most-searched child health questions in Australia.⁶ The answer that comes back from the top of Google is usually an alarmed, one-size-fits-all number. The answer that comes back from the actual health bodies is more nuanced — and, for most families, more reassuring.

A side-by-side overview

The three most cited guidelines globally are the World Health Organization's 2019 document, the American Academy of Pediatrics' 2016 policy statement, and the Australian Government's 24-Hour Movement Guidelines. They are remarkably consistent with each other.

Those numbers sound strict. In practice, Australian data from the RCH Child Health Poll shows most children exceed them substantially — with the average screen exposure at age 4 being around two hours per day.⁶ The point of the guidelines is not to shame families, it's to describe what the evidence supports.

What the WHO actually recommends

The World Health Organization published its Guidelines on physical activity, sedentary behaviour and sleep for children under 5 years of age in 2019. Its screen-time advice is embedded in a broader 24-hour framework — because screen time isn't a standalone behaviour, it competes with sleep, active play, and caregiver interaction.¹

• Infants (under 1 year): "Screen time is not recommended." Time when infants are restrained (pram, high chair) should not exceed one hour. When sedentary, the recommendation is reading and storytelling with a caregiver.
• 1-year-olds: Screen time is still not recommended.
• 2-year-olds: Screen time should not exceed one hour, and less is better.
• 3–4 year olds: The one-hour-or-less ceiling remains. Active play should total at least 180 minutes across the day.

What the American Academy of Pediatrics says

The AAP's Media and Young Minds statement (2016) takes a slightly different, more practical line. Its guidance acknowledges that video-calling is developmentally fine, and that under strict conditions, some high-quality content can be introduced earlier than the WHO allows.³

• Under 18 months: Avoid use of screen media, other than video chatting.
• 18–24 months: If parents choose to introduce digital media, choose high-quality programming (the AAP specifically cites PBS Kids and Sesame Workshop) and co-view with your child. Solo viewing at this age is discouraged.
• 2–5 years: Limit to one hour per day of high-quality programming, co-viewed, so parents can help children understand what they are seeing and apply it to the world around them.

The AAP's distinction between co-viewed and solo, and between high-quality and stimulating-junk, is the most important insight in any of the guidelines — and it is the one most often stripped out by headlines.

Australia's 24-Hour Movement Guidelines

Australia's guidelines, published by the Department of Health in 2021, are adapted from the Canadian 24-hour movement guidelines and are closely aligned with the WHO.² Their distinctive feature is the "24-hour" framing — they refuse to treat screens in isolation from sleep and activity.

For Australian families, the official recommendations are:

• 0–2 years: Sedentary screen time is not recommended. Reading, singing, and storytelling with a caregiver are actively encouraged.
• 2–5 years: Sedentary screen time should be no more than one hour per day — less is better.
• All ages under 5: Replace sedentary time with active play. Break up long periods of sitting. Prioritise sleep (11–14 hours for toddlers, 10–13 hours for preschoolers including naps).

What the research — not the headlines — actually shows

The evidence base behind these guidelines has grown substantially in the last decade. A few studies are worth knowing about, because they tend to drive media cycles:

Madigan et al. (2019) — JAMA Pediatrics

A longitudinal study of 2,441 children in Calgary, Canada, found that higher screen time at 24 months predicted poorer scores on a developmental screening tool at 36 months — and the relationship was directional, not just correlational (children with lower scores did not subsequently watch more TV).⁴ The effect sizes were small but real.

Hutton et al. (2020) — JAMA Pediatrics

A brain-imaging study of 47 preschool children found that higher screen use (above AAP guidelines) was associated with lower microstructural integrity in white-matter tracts supporting language and literacy. The study is small and cross-sectional — it cannot prove causation — but it is the most direct brain-level evidence available.⁵

Madigan et al. (2020) — JAMA Pediatrics meta-analysis

A systematic review of 42 studies involving 18,905 children found that greater quantity of screen use was associated with poorer language skills, but higher quality of screen use and co-viewing were associated with stronger language skills.⁷ This is the single most important finding in the whole screen time literature.

Why quality of content matters more than minutes

The single biggest insight from 20 years of research is that what children watch, and with whom, matters more than the raw minutes. One hour of a slow-paced, dialogic show like Bluey, watched next to a parent who occasionally pauses to ask "what do you think Bingo's going to do?", looks almost nothing like one hour of a fast-cut, auto-played algorithmic feed.

For a closer look at why pacing and content structure matter so much — and what the Lillard & Peterson 2011 SpongeBob study actually showed — see our piece on what the research says about fast-cut children's programming.

A practical approach for real families

If the hour-a-day number feels impossible — especially for working families, sick days, long flights, or the thousand legitimate reasons a screen happens — here is a more useful mental model than a stopwatch:

You don't need to feel guilty about an hour of Bluey while you cook dinner. You do want to be clear-eyed about the difference between that and an hour of algorithmic shorts with no one watching alongside. The guidelines agree. So does the research.