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Screen time calculator: what your daily phone hours add up to
Enter your daily screen time to see what it adds up to in a week, a year and, with your age, the rest of your life. Plus a gradual plan to cut back.
What it adds up to
4 hours a day is 1,460 hours a year: about 61 full days.
Over the rest of your life
Assumes you keep this daily average until age 80 and are awake 16 hours a day. It is a rough projection, not a prediction.
Add your age to see how many years of your waking life this adds up to by age 80.
Your cut-back plan
| Week | Starts | Daily limit |
|---|
The short answer
Multiply your daily screen time by 365 to see the yearly total. Four hours a day is 1,460 hours a year, about 61 full days. One hour less each day frees 365 hours a year, or roughly 15 days. Use the number your phone reports rather than a guess, because people often misjudge their own use.
Screen time per year: quick table
| Daily screen time | Hours a year | Full days a year |
|---|---|---|
| 1 hour | 365 | about 15 |
| 2 hours | 730 | about 30 |
| 3 hours | 1,095 | about 46 |
| 4 hours | 1,460 | about 61 |
| 5 hours | 1,825 | about 76 |
| 6 hours | 2,190 | about 91 |
"Full days" means 24-hour days. Measured against waking hours, the share is larger: at 16 waking hours, 4 hours of screen time is a quarter of your day.
How to use the calculator
- Check your real number. On iPhone: Settings → Screen Time → See All App & Website Activity. On Android: Settings → Digital Wellbeing. Use the weekly daily average.
- Pick a goal you could keep. Cutting an hour is a big change for most people; half an hour is a good first goal.
- Follow the weekly steps. Set an app limit that matches each week's number, and move to the next step only when the current one feels normal.
What helps screen time actually go down?
Curious about a "dopamine detox"? Read what a dopamine detox really is and whether it works.
Studies point to small, concrete changes more than willpower: self-set limits, fewer notifications and friction such as moving apps off the home screen. Read how to reduce screen time, how much screen time is too much for adults and what research says about reducing smartphone use.
Frequently asked questions
How do I find my real screen time?
On iPhone, open Settings, then Screen Time, then See All App & Website Activity. On Android, open Settings, then Digital Wellbeing. Use the daily average for the last week, not a single day.
How much screen time is normal for adults?
There is no single healthy number for adults. What matters more is what the time replaces, such as sleep, movement or time with people, and whether you feel in control of it.
Does work screen time count?
Count what you want to change. Most people use this calculator for phone and leisure screen time, since work hours are harder to move.
What is the easiest way to cut screen time?
Set a daily limit for your two most-used apps, keep the phone out of the bedroom and move distracting apps off the home screen. Small, self-chosen changes like these reduced use in studies.
How is the lifetime number worked out?
If you add your age, the calculator assumes you keep your current daily average until age 80 and are awake 16 hours a day. It shows your screen hours as a share of the waking years left. It is a rough projection, not a prediction.
How fast should I cut back?
Gradually. Taking 15 minutes off your daily average each week is easier to keep than a sudden big cut, and the plan below turns that into dated steps.
Sources and evidence
- Andrews et al. (2015): Beyond self-report, comparing estimated and real-world smartphone use — People's estimates of their phone use were only a rough match for tracked use, which is why the calculator starts from your phone's own report.
- Allcott, Gentzkow and Song (2022): Digital addiction — Self-set time limits substantially reduced use in a field experiment.
- Olson et al. (2022): A nudge-based intervention to reduce problematic smartphone use — A bundle of small, self-chosen changes lowered screen time compared with monitoring alone.