How is screen time over a lifetime calculated?

We take your daily screen hours, multiply by 365.25 days, then project across the years between your current age and your life expectancy. The 'years of your waking life' figure divides that total by your waking hours per day, so it counts only the hours you were awake.

Is my data sent anywhere?

No. This calculator runs entirely in your browser. Nothing you type is uploaded or stored on any server.

Screen Time Calculator

Enter how much you're on your phone and screens each day. See what it quietly adds up to, at this pace, over the rest of your life.
Runs entirely in your browser. Nothing you type is sent anywhere.

Hours a day on your phone & screens 4 h

Your age

Assumptions

Life expectancy Waking hours a day

years of your remaining waking life, at this pace

28hours a week

61days a year

25%of waking hours

5kwaking days left, on screens

In a single year, that much time is enough to:

read 73 books
reach conversational basics in a new language 2.4× over
train for and run 1.8 marathons

Rough equivalents: ~5 hrs a book, ~150 hrs to conversational basics, ~200 hrs of marathon training. The point isn't the exact number, it's the scale.

Here's the honest part. Plenty of those hours are well spent, and screens aren't the enemy. The tricky bit is that they all look the same in a report. A phone timer or a website blocker can't tell your focused, in-the-zone hours from the ones that just vanished. A 10-hour work day and a 10-hour binge count identically.

That's the exact problem Hawser was built for: it watches the context, stays quiet while you're actually working, and steps in only when you drift off the thing you sat down to do.

See how Hawser works

How this is calculated

We take your daily screen hours × 365.25 days to get a year, then project it across the years between your age and your life expectancy. The headline "years of your waking life" divides the total by your waking hours a day, so it only counts hours you'd actually be awake, not time you'd be asleep anyway. Everything runs locally in your browser.