Screen time calculator

How to use the calculator

1. Enter the minutes you spend on your phone on a typical day in Minutes a day on your phone. If you only want to count social feeds, enter that number instead.
2. Enter your age. The projection runs from there to 80; change Count up to age under Assumptions for a different horizon.
3. If you like, enter Minutes a day you’d move to lessons to see what those minutes would come to as one-minute lessons.
4. Copy the link to share your settings, or copy the result as text.

The tool starts at 159 minutes, the average daily time online adults spend on social and video platforms. Press Use the social and video average to go back to it.

How the numbers are worked out

It’s multiplication. Hours a year are your daily minutes × 365 ÷ 60, and full days are those hours ÷ 24. The share of your waking day is your daily hours ÷ your waking hours, which are 16 unless you change them (16 awake, 8 asleep). The projection multiplies the yearly hours by the years left until the age you chose, then shows the total two ways: as 24-hour years of 8,760 hours, and as waking years of 16 × 365 = 5,840 hours.

With the starting values (159 minutes a day, age 30, 16 waking hours, counted to 80):

• 159 × 365 ÷ 60 = 967.25 hours a year, which is 40.3 full days.
• 159 minutes is 2.65 hours, or 16.6% of a 16-hour waking day.
• Over 50 years that’s about 48,360 hours: 5.5 calendar years, or 8.3 waking years.

The lessons panel uses about one minute per lesson, question included. Ten minutes a day is 60.8 hours a year and 3,650 lessons, enough to read all 1,753 of Scroll’s lessons in 176 days. The free plan stops at 5 lessons a day, which comes to 1,825 a year.

The strip of 52 squares shows the same share another way. At 16.6% of each waking week, your phone time fills about 8.6 of the year’s 52 weeks, if you imagine it arriving in one stretch.

What the averages say

The starting value comes from the one verified average we could find for the apps people usually mean when they talk about scrolling. In DataReportal’s Digital 2026 report, published in October 2025 with survey data from GWI, online adults spent 18 hours and 36 minutes a week on social platforms such as Facebook and X plus video platforms such as YouTube and TikTok. Divided by 7, that’s 159 minutes a day.

That figure covers those apps, not everything a phone does. It’s also an average across online adults in many countries. We looked for a verified average of total daily phone time, worldwide or for the US, and didn’t find one we could trace to its source, so the calculator doesn’t show one. Country-by-country rankings circulate on secondary sites, but they disagree with each other, so we’ve left them out.

For comparison, the US Bureau of Labor Statistics’ American Time Use Survey for 2025 found that people aged 15 and over spent an average of 2.61 hours a day watching TV, 37 minutes on games and leisure computer use combined, and 16 minutes reading for personal interest. Those averages include everyone, even people who didn’t do the activity that day. The bar chart under the tool sets your number next to them.

Finding your real number

Your phone already keeps count. On an iPhone, open Settings and tap Screen Time. On Android, open Settings and tap Digital Wellbeing; Google’s help page says the steps vary by device, and that the dashboard shows screen time per app, how often you opened your phone and apps, and how many notifications came in.

Two choices change the number a lot. Look across several days, because a single day can be unusual. And decide what you’re counting: total screen time includes maps, calls, messages and reading. If you only want the feeds, add up those apps from the per-app list and enter that instead.

Screen time and what it is spent on

The calculator counts minutes, and minutes don’t say what you did with them. An hour on a video call with family and an hour of a feed count the same in a screen-time total.

Most research on screens measures associations. In 2025, Nguyen and colleagues pooled 71 studies with nearly 100,000 participants and found that heavier short-form video use went with weaker attention and self-control. For attention the correlation was about minus 0.38, which means the two measures shared about 14% of their variation. Most of the studies measured both things at the same time, so they can’t say which came first: people who find it hard to concentrate may also choose more short video. We don’t attach a harm figure to your result, because none of this work measured what a given number of minutes does to a given person.

Where the 8-second figure came from

If you’re curious how long you can keep your focus on a dull task, try the attention span test.

Small swaps and what they add up to

Five minutes a day is 30.4 hours a year. As one-minute lessons it’s 1,825, exactly what Scroll’s free plan allows at 5 a day. Ten minutes doubles both. Nobody has tested whether reading those lessons changes anyone’s memory or focus, us included; what the numbers show is time.

If you want a few minutes of reading to become a daily thing, the habit formation calculator turns Lally and colleagues’ 2010 study into dates: new daily habits took about 66 days on average to feel automatic, and anywhere from 18 to 254 days. For ways to cut the feed itself, see how to stop doomscrolling.

What the result doesn’t tell you

This multiplies one daily average forward. It can’t tell useful screen time from scrolling you regret, and real habits change from year to year. The projection to 80 is arithmetic, and 80 is a horizon you can move, not a life expectancy. Nothing here measures attention, memory or wellbeing.