How to use the screen time calculator
- Enter your daily average. Type your daily screen time in hours or tap a preset. Your phone's Screen Time or Digital Wellbeing report shows the number.
- Add your age details. Enter your age, the age you got a smartphone and the life expectancy you want to plan with.
- Set sleep and a goal. Your sleep sets the waking hours, and the goal shows how much time you would reclaim by cutting back.
- Read the result. See hours per week and year, how much of your waking day your phone takes, and your lifetime total.
How much of your life do you spend on your phone?
Small daily numbers add up quickly. Five hours a day is about 1,825 hours a year, which is roughly 76 full days. This screen time calculator multiplies your daily average across the years you have left and compares it with your waking hours, so the figure reflects the time you are actually awake.
Years of life versus years of waking life
Most people sleep around a third of their lives, so a phone habit is better measured against waking hours. Five hours a day is about 31% of a 16-hour day, which is why the headline number is in years of waking life.
Reduce the number without deleting everything
Set the goal field to a realistic target and see the time you would get back. Our phone screen time guide covers app limits, grayscale and notification changes that make cutting back stick.
Frequently asked questions
On iPhone open Settings → Screen Time. On Android open Settings → Digital Wellbeing & parental controls. Both show a daily average you can enter here.
It depends on your daily hours. Five hours a day over 55 remaining years is about 100,000 hours, which is roughly 11.5 years of nonstop time or about 17 years of waking life.
There is no single healthy limit for adults because it depends on what you do. This calculator labels under 2 hours light, 2 to 4 moderate, 4 to 7 heavy and over 7 very heavy as a simple guide, not medical advice.
No, it is meant for phone use, but you can enter total screen time from all devices to see the combined figure.
Sleep is time you cannot spend on a screen, so subtracting it gives a fairer share of your waking day.
No. Everything is calculated in your browser and nothing is sent to a server.