Japanese High Schoolers Average 6h19m Online on a Weekday — What That Number Actually Counts
Japan's 2024 government survey of 10-to-17-year-olds reports 6 hours 19 minutes of weekday internet use for high schoolers. Here is what that figure sums together, what the phone alone accounts for, and how homes with and without rules compare.
“Japanese high schoolers spend 6 hours 19 minutes a day on their phones” is a figure you will see quoted often. It comes from a government survey, and the number itself is accurate. What usually gets lost is that the 6 hours 19 minutes is not phone time. For a side-by-side table of the different surveys, see how much time people actually spend on their phones; here I open just the youth survey and look at what the number is made of.
Where the figure comes from
It is from the Children and Families Agency of Japan, “Survey on the Internet Usage Environment of Young People,” fiscal 2024 edition, published March 2025.
| Item | Detail |
|---|---|
| Sample | 5,000 young people aged 10 to 17 in Japan as of 1 November 2024, plus 5,000 co-resident parents |
| Valid responses | 3,129 young people (62.6%) and 3,174 parents (63.5%) |
| Fieldwork | 1 November to 16 December 2024 |
| Method | Stratified two-stage random sampling, primarily face-to-face interviews conducted by fieldworkers, with drop-off collection and online responses also used |
This is not an online panel: households were drawn at random and visited. Usage time was asked of the 3,072 respondents who said they use the internet. The report notes that “not used” was counted as zero minutes and that “don’t know” and non-responses were excluded from the averages.
The answers are still recollections rather than measured screen time. The quirks of self-reporting are covered separately in self-reported phone time is not measured phone time.
Weekday averages by school level
Minutes per weekday, totalled across all devices.
| School level | Average | 3 hours or more | 5 hours or more |
|---|---|---|---|
| Elementary (962) | 223.9 min (3h44m) | 55.2% | — |
| Middle school (1,157) | 302.3 min (5h02m) | 74.4% | — |
| High school (938) | 379.4 min (6h19m) | 81.9% | 56.8% |
| All respondents (3,072) | 302.3 min (5h02m) | 70.7% | 42.3% |
More than half of high schoolers (56.8%) are at five hours or more. By sex and age, 17-year-old boys were highest at 420.8 minutes.
The 6h19m is a sum across devices
This is the part that matters for reading the number. The survey asks about seven device types separately — smartphone, school-issued laptop or tablet, home computer or tablet, games console, TV and so on — and adds the answers together. It is not six hours on one screen. For high schoolers, the per-device averages were:
| Device | High school average |
|---|---|
| Smartphone | 238.5 min (about 3h59m) |
| School-issued laptop or tablet | 90.6 min |
| Home computer or tablet | 86.5 min |
| TV | 71.1 min |
| Games console | 56.2 min |
So the phone itself is roughly four hours. For middle schoolers it was 172.5 minutes and for elementary schoolers 97.8 minutes: the higher the school level, the larger the phone’s share. Across all respondents, the smartphone was the most used device at 76.8%, followed by school-issued devices at 74.0%.
Read the headline figure as phone time and you end up worrying about the tablet a school handed out alongside it. If you are deciding what to change, start from the per-device numbers rather than the total.
Homes with rules differ by 76 minutes
The survey also breaks usage time down by whether the young person said their household had internet rules.
- Rules in place (2,073 respondents): 279.5 minutes
- No rules (772 respondents): 355.4 minutes
The gap is about 76 minutes. Both answers were collected at the same moment, though, so this cannot show that making a rule cut 76 minutes. The reverse reading — that households with heavier use find rules harder to establish — fits the same data.
The more useful detail is what the rules cover. Among the 2,073 who said rules existed, the most common was “how long it can be used” at 70.4%, followed by “tell a parent straight away if something goes wrong” at 53.4% and “spending limits and in-app purchases” at 46.6%. Time limits are the mainstream rule, and little else is.
One more gap worth noting: 46.6% of high schoolers said their household had rules, against 61.1% of their parents — a 14.5-point difference (7.8 points for elementary, 9.1 for middle school). A separate survey of 100 parents of middle and high schoolers in Japan by Jukusen Journal (updated April 2025) likewise reports that plenty of households loosen or drop the rules once a child reaches high school and leave it to self-management. Rebuilding a rule with that mismatch in mind is covered in when household phone rules stop being followed.
Bringing it back to your own numbers
Comparing yourself to an average is less useful than producing your own figure the same way.
- Open Screen Time or Digital Wellbeing and look at the weekday average for the past week (the survey covers weekdays only)
- Read the breakdown for the phone alone, keeping school or work devices separate
- List your three longest apps and pick only one to put inside a time window
- If you are discussing it with family, show the per-device numbers, not the total
If you want to change your own setup rather than someone else’s, how to lock your phone away while you study covers the steps.
Sources
- Children and Families Agency of Japan, “Survey on the Internet Usage Environment of Young People,” fiscal 2024 report (published March 2025; 3,129 young people and 3,174 parents in Japan, fieldwork 1 November to 16 December 2024, stratified two-stage random sampling): https://www.cfa.go.jp/policies/youth-kankyou/internet_research/results-etc/r06
- Jukusen Journal, “What time is curfew for middle and high schoolers? How long on the phone?” (100 parents of middle and high school students in Japan, updated 16 April 2025): https://bestjuku.com/shingaku/s-article/18073/
Note: this article summarises published survey findings and is not medical diagnosis or advice.
FAQ
- How much time do Japanese high school students spend on their phones?
- Japan's Children and Families Agency survey for fiscal 2024 reports 379.4 minutes (6 hours 19 minutes) of weekday internet use for high schoolers, but that is the total across every device. The smartphone alone averaged 238.5 minutes, or about 3 hours 59 minutes.
- What are the averages for middle and elementary school students?
- In the same survey, the all-device total averaged 302.3 minutes (5 hours 2 minutes) for middle schoolers and 223.9 minutes (3 hours 44 minutes) for elementary schoolers. On the smartphone alone the figures were 172.5 and 97.8 minutes.
- Do households with phone rules show lower usage?
- In the same survey, young people who said their household had rules (2,073 respondents) averaged 279.5 minutes, while those who said it did not (772 respondents) averaged 355.4 minutes. The gap is about 76 minutes, but both answers were collected at the same moment, so the data cannot show that rules caused the shorter time.
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