如何计算Screen Time
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Screen time tracking quantifies daily exposure to phones, TVs, and computers. Excessive recreational screen time is linked to poor sleep, reduced physical activity, and lower wellbeing.
公式
分步指南
- 1Total = Phone + TV + Computer hours per day
- 2Separate work/educational from recreational time
- 3WHO: no screens for under-2s; < 1h for 2–5yr; < 2h recreational for 5–17yr
- 4Adults: no formal limit; > 7h/day recreational increases health risks
例题解析
常见问题
What is Screen Time?
Screen time tracking quantifies daily exposure to phones, TVs, and computers. Excessive recreational screen time is linked to poor sleep, reduced physical activity, and lower wellbeing
How accurate is the Screen Time calculator?
The calculator uses the standard published formula for screen time. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.
What units does the Screen Time calculator use?
This calculator works with inches, watts. You can enter values in the units shown — the calculator handles all conversions internally.
What formula does the Screen Time calculator use?
The core formula is: Total = Phone + TV + Computer hours per day. Each step in the calculation is shown so you can verify the result manually.
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