Most screen time figures you will find are self-reported, several years old, and American. These are not. Ofcom installed monitoring software on the devices of 701 UK children aged 8 to 14 and measured what they actually did for 28 consecutive days each, between October 2025 and March 2026.
Measured across smartphones, tablets and computers. Television sets, games consoles and smart speakers are not included, so the real totals are higher. Ages 8 to 14 from Ofcom's Children's Passive Online Measurement study; ages 15 to 17 from Ipsos iris, May 2025.
By 15 to 17, a child is spending the equivalent of almost two full days a week on a screen. That is more time than a part-time job.
The four numbers that matter more than the average
The gap between children is bigger than the gap between ages. Among 8 to 14 year olds, the lightest quarter spent 55 minutes a day online. The heaviest quarter spent 6 hours 28 minutes. Among the heaviest 13 to 14 year olds it was close to 7 hours. If you are trying to work out whether your child is unusual, the average is almost useless. The quartiles are the thing to look at.
Most of it is not what you would call using a computer. Of the 3 hours 36 minutes an average 8 to 14 year old spends online, 1 hour 59 minutes is on social media or video sharing. YouTube alone accounts for 49 minutes a day, 23% of the total. Snapchat is second at 39 minutes.
Late night use is real and it is measurable. Children aged 8 to 9 spent an average of 14 minutes a day online between 11pm and 5am. By 13 to 14 that rises to 25 minutes a day. Those are averages across every child in the sample, which means for the children doing it, the numbers are much larger.
Weekends are only 43 minutes worse. Weekday use averaged 3 hours 24 minutes, weekends 4 hours 7 minutes. Screen time is not a weekend problem that spikes and resolves. It is a daily baseline.
Two patterns worth noticing. Roblox time falls as children get older while TikTok time rises sharply, from 16 minutes to 50. And among the heaviest users aged 8 to 14, Snapchat alone was taking 4 hours 20 minutes a day.
How much screen time is too much?
There is no official hour limit for children over five in the UK, and anyone quoting you one is inventing it. Ofcom does not set a threshold and neither does the Department for Health.
The more useful question is what the screen time is displacing. Sleep, exercise, homework, meals and face-to-face time are the things that suffer, and they are measurable in your own house without any research at all. The Ofcom late-night figures are the clearest warning sign in the whole dataset, because time online between 11pm and 5am is time taken directly out of sleep.
Children largely agree there is a problem. Among 8 to 17 year olds, 37% said their screen time was too high. Parents were more worried: 55% of parents of 8 to 17 year olds said their child's screen time was too high.
What children are already doing about it
This is the finding most parents will not expect. Among 13 to 17 year olds, 65% had taken at least one step in the past year to manage their own time online:
- 29% disabled notifications
- 28% set aside time when they are deliberately not online
- 21% stopped taking devices to bed
Ofcom's qualitative work found that for some teenagers these steps do not feel effective, and children and parents both pointed at the same design features when asked why: infinite scroll, auto-play and streaks.
One 10 year old boy described it to Ofcom's researchers as scrolling until lunchtime had somehow become dinner time.
What parents are doing
Rules are close to universal, and mostly about time rather than content. Among 8 to 17 year olds with a smartphone, 89% said they have rules about phone use, most commonly about how long they spend on it. Among parents of children who game, 91% had set rules about gaming.
Device ownership is worth knowing about because it is the moment the numbers change. Ofcom found 78% of 8 to 17 year olds own their own mobile phone, and the jump happens between ages 10 and 11, from 56% to 83%. That is the year to have the conversation, not the year after.
A note on which country these numbers describe
This is UK measurement. No comparable passive study is published for South Africa or the UAE at this level of detail, so anyone giving you South African screen time averages by age is almost certainly recycling American survey data.
The UK figures are the closest robust proxy for English-speaking households with similar smartphone saturation, and the age curve is the part most likely to travel. Treat the absolute hours as indicative outside the UK and the shape of the curve as reliable.
Does online school add to this?
It is a fair question and the honest answer is that it changes the composition rather than simply adding to the total. Ofcom's data shows the majority of a child's screen time is already recreational: 1 hour 59 minutes of social media and video out of 3 hours 36 minutes for 8 to 14 year olds, before any schoolwork.
At CambriLearn, lessons are live and timetabled, which means the screen use has a start time, an end time and a teacher on the other side of it. That is a different kind of screen time from infinite scroll, and it is worth separating the two when you are counting.
Frequently asked questions
What is the average screen time for a teenager? UK children aged 13 to 14 spend an average of 4 hours 19 minutes a day online, and 15 to 17 year olds spend 6 hours 20 minutes a day, which is 44.3 hours a week. These figures are measured on children's own devices by Ofcom rather than self-reported, and cover smartphones, tablets and computers only.
What is the average screen time by age? Ages 8 to 9 average 2 hours 53 minutes a day, ages 10 to 12 average 3 hours 34 minutes, ages 13 to 14 average 4 hours 19 minutes, and ages 15 to 17 average 6 hours 20 minutes. The average across 8 to 14 year olds is 3 hours 36 minutes a day, or 25.2 hours a week.
How much screen time should an 8 year old have? There is no official time limit in the UK for children over five. For context, 8 to 9 year olds currently average 2 hours 53 minutes a day, including 14 minutes between 11pm and 5am. Displacement matters more than the total: if screen time is taking sleep, exercise or homework, it is too much regardless of the number.
How much screen time is too much? No UK body sets an hour limit for over-fives. The practical test is what the screen time replaces. Late-night use is the clearest warning sign, because time online between 11pm and 5am comes directly out of sleep. Ofcom found 37% of 8 to 17 year olds think their own screen time is too high, and 55% of parents think their child's is.
Which apps take up the most time? For ages 8 to 14, YouTube at 49 minutes a day and Snapchat at 39 minutes together account for 41% of daily online time. For 15 to 17 year olds, YouTube rises to 1 hour 43 minutes and TikTok to 50 minutes a day.
Do children spend more time online at weekends? Slightly. Children aged 8 to 14 averaged 3 hours 24 minutes on a weekday and 4 hours 7 minutes at a weekend, a difference of 43 minutes.
Is my child's screen time unusual? Compare against the quartiles rather than the average. Among 8 to 14 year olds, the lightest quarter averaged 55 minutes a day and the heaviest quarter averaged 6 hours 28 minutes. The range between children of the same age is wider than the range between age groups.
Does online school increase screen time? It changes what the screen time consists of more than it adds to the total. Ofcom's figures show most of a child's existing screen time is recreational: 1 hour 59 minutes of social media and video out of 3 hours 36 minutes a day for 8 to 14 year olds, before any schoolwork is counted.
Sources
Ofcom, Children's Online Experiences, published 21 May 2026. Daily and weekly figures for ages 8 to 14, service breakdowns, quartiles, daypart data and attitudes come from Ofcom's Children's Passive Online Measurement study: 701 UK children aged 8 to 14, each monitored for 28 consecutive days, fieldwork 9 October 2025 to 7 March 2026.
Figures for ages 15 to 17 come from Ipsos iris Online Audience Measurement Service, May 2025, UK internet users aged 15 to 17, smartphones, tablets and computers only.
Attitude, device ownership and parental rules figures come from Ofcom's Children and Parents: Media Use and Attitudes Report 2026, published 21 May 2026, based on 5,008 interviews with fieldwork between November 2025 and February 2026.
About CambriLearn
CambriLearn is an online school for students aged 4 to 19, teaching live timetabled lessons with specialist teachers across six curriculum pathways: the International British Curriculum*, Pearson Edexcel, US K-12, CAPS, KABV and the IEB. We are accredited by Cognia and by Pearson Edexcel, registered with SACAI and with the IEB, and NCAA approved. Families have rated us 4.8 stars across Google, Trustpilot, HelloPeter and Facebook.
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