Screen Time Cost Calculator

Four hours a day on your phone is 1,460 hours a year — sixty-one twenty-four-hour days, and a quarter of your waking life if you sleep eight hours. Move the slider to your own figure and this converts it into days, books, workouts and, if you enter a rate, money.

This year, you will spend

full days staring at your phone

That is 25.0% of your waking life spent scrolling

Daily Screen Time

4 hrs

1 hr 6 hrs 12 hrs

Your Hourly Rate (optional, for money calculation)

€

What would you rather do with that time?

Read Exercise Learn a skill Sleep more Spend time with family

The Real Cost of Your Screen Time

1,460

Hours per year

Full days per year

25.0%

Of waking life

243

Books you could read

1,460

Workouts you could do

€29,200

Money equivalent

How the figures are calculated

Everything on this page comes out of one multiplication: your daily hours times 365. Four hours a day is 1,460 hours a year, which the tool also reports as 60.8 twenty-four-hour days. The percentage underneath is that annual figure over the waking hours in a year, and the assumption behind it is stated here because it is not visible on the page: waking hours are taken as 16 a day, so 5,840 a year. Four hours a day is therefore 25 per cent of your waking life on this page's arithmetic. Change your own sleep and that percentage moves.

The comparisons are conversions at fixed rates, all of them ours. A book is treated as 6 hours of reading and a workout as 1 hour, so 1,460 hours becomes 243 books or 1,460 workouts. Learning a skill, extra sleep and time with family are converted one for one, because an hour is an hour. Books and workouts vary enormously — a 6-hour book is a short one and a 1-hour workout is a long one for many people — so those two counts are illustrations of scale rather than a plan.

The money figure is the annual hours times whatever hourly rate you type, shown in euros, and it is worth being clear about what that is not: it is not lost earnings. Almost nobody can convert an arbitrary hour into a billed hour, and the number is an equivalence to make the scale legible, not a forecast of income.

Two findings are quoted on the page and neither feeds the arithmetic: the link between screen time and adolescent wellbeing is small in the largest analysis, and self-reported screen time matches the phone's own log only loosely. Both are cited below.

Where these numbers come from

1. The association between adolescent well-being and digital technology use — Orben A, Przybylski AK, Nature Human Behaviour 3:173–182, 2019 (PubMed)
2. A systematic review and meta-analysis of discrepancies between logged and self-reported digital media use — Parry DA et al., Nature Human Behaviour 5:1535–1547, 2021 (PubMed)

Nothing on this site is medically reviewed. Every figure above was read out of the code that runs on this page, and where a number is our own judgement rather than a published one, the note says so and cites nothing. Method last checked 25 September 2026.

What four hours a day actually costs

Four hours a day for 75 years is 12.5 years of phone screen. That is arithmetic rather than a forecast, and it is the reason this page exists: at that rate you are trading more than a decade of waking life for scrolling, swiping, and tapping.

This isn't about demonizing technology. Phones are incredible tools. But there's a difference between using your phone intentionally and being used by it. Much screen time is passive — feeds, news cycles, and short-form video that leaves you feeling drained rather than energized.

The opportunity cost is the point. Four hours of daily phone time equals 1,460 hours per year — on this page's conversions, 243 six-hour books or 1,460 one-hour workouts, or 1,460 hours put into a language, or, at whatever hourly rate you enter, the same hours priced as money.

The first step is awareness, and the number people carry in their heads is not reliable: a 2021 meta-analysis of 106 comparisons found self-reported phone use only moderately related to what the phone itself logged. Check your phone's own screen-time report, enter that, and then decide what you'd rather do with the hours.

Frequently Asked Questions

How much screen time is too much?

There is no agreed line for adults. The best-known studies tie screen time to lower wellbeing in teenagers, and even there the link is small — at most 0.4 per cent of the variation in wellbeing in Orben and Przybylski's 2019 analysis of 355,000 adolescents. The useful question is not the hour count but what the hours displace, which is what this page shows.

How is the money equivalent calculated?

The money equivalent multiplies your annual phone hours by your hourly rate. This represents the value of the time spent, not actual money spent. If you earn €20/hr and spend 4 hours daily on your phone, that's €29,200/year worth of time.

What counts as screen time?

This calculator focuses on recreational or passive screen time — social media, browsing, streaming, gaming. Work-related screen use and intentional activities like video calls with family or learning are different and generally not counted.

How can I reduce my screen time?

Start by tracking your current usage with your phone's built-in screen time tool. Set app limits, enable grayscale mode, remove social media from your home screen, and replace phone habits with intentional alternatives like reading or exercise.

Cut screen time with habit tracking in Dailies

Replace mindless scrolling with intentional habits. Track your progress and build better screen habits with Dailies.