The free Life in Numbers — How Much of Your Life
Enter your age, sleep hours and screen time to see exactly how many years of your life you've spent sleeping and on your phone — real math.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Age 28, 7h sleep/night, 4.5h screen time/day → about 8.2 years spent asleep and 5.3 years spent on a screen.Open the Life in Numbers — How Much of Your Life
Illustration. Open the tool for the real thing.
See it in action
The Life in Numbers — How Much of Your Life with sample data entered and the result showing.
What is the Life in Numbers — How Much of Your Life?
Enter your age, your average sleep hours per night and your daily screen time, and this tool does the real arithmetic: age × (hours per day ÷ 24) for each habit, converted into years of your life. It's a genuinely accurate way to see where the years have actually gone.
The result is shown as a big shareable card with a count-up animation, alongside a rough estimate of your total heartbeats so far based on a commonly cited average resting heart rate.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Uses your literal inputs — not a random or fabricated number.
See years of sleep and screen time the moment you enter your numbers.
Save an image or copy a link to compare with friends.
All calculation happens in your browser.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This fun tool | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Is this exact?
It's exact arithmetic based on the averages you enter; real day-to-day variation means your true total may differ slightly.
Where does the heartbeat estimate come from?
A commonly cited average resting heart rate of about 70 beats per minute — it's an estimate, not a personal measurement.
Is my data stored?
No, everything is calculated locally in your browser.
Can I use decimals?
Yes, both sleep and screen time accept half-hour increments.
Does it account for naps or weekends differently?
No, it uses a single daily average you provide for simplicity.
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