This calculator adds up the time you spend on your phone, computer, TV, and other devices each day, then divides that total by your waking hours to show what percentage of your day is spent on screens.
Screen Time Calculator
Total daily screen time across devices/apps, and what percentage of your waking day that represents.
What the Screen Time Calculator Covers
This calculator covers daily screen time totals, device-by-device time tracking, and percentage-of-day calculations across phone, computer, TV/streaming, and other devices. Rather than relying only on a single app’s built-in screen time report, this lets you combine time across every device you use into one daily figure.
This is useful for anyone trying to get a clearer picture of total daily screen exposure across all their devices combined, not just one app or platform’s isolated report, which often undercounts total time since it only tracks that one device.
How Total Screen Time Is Calculated
Formula
Total Screen Time = Phone + Computer + TV/Streaming + Other Devices
Percent of Waking Day = Total Screen Time ÷ Waking Hours × 100
Where:
- Each device category = hours spent on that device type in a single day
- Waking Hours = the number of hours you’re typically awake in a day
Worked Example
2.5 hours on phone, 6 hours on computer, 1.5 hours on TV, 0 hours other, with 16 waking hours in the day.
Total Screen Time = 2.5 + 6 + 1.5 + 0 = 10 hours
Percent of Waking Day = 10 ÷ 16 × 100 = 62.5%
That’s 10 hours of total screen time, representing just over 62% of a 16-hour waking day.
Why Combining Devices Matters
A phone’s built-in screen time report only counts phone use, missing hours spent on a work computer or watching TV. Adding all device categories together gives a more complete picture of total daily screen exposure than any single device’s report alone.
Frequently Asked Questions
Does this distinguish between work and leisure screen time?
No — it totals all screen time regardless of purpose. If you want to separate work from leisure use, track and calculate each category separately using the same tool.
What counts as “waking hours”?
This is simply 24 hours minus your typical sleep duration — for example, someone who sleeps 8 hours has 16 waking hours to use as the denominator.
Should overlapping device use, like watching TV while on my phone, be counted twice?
This calculator adds each device’s time independently, so simultaneous use across devices will add up to more than 100% of your waking day if entered separately — consider estimating your primary device during overlapping periods if you want a more conservative total.
Is there a recommended daily screen time limit?
Recommendations vary by age, occupation, and source, and often distinguish between work-related and recreational screen use, so there’s no single universal figure that applies to everyone’s situation.
How do I track screen time across a full week instead of one day?
Run this calculation once per day and add the daily totals together, or track a full week’s hours per device and enter those weekly sums directly for a weekly total and percentage.