Child Screen Time Safety Calculator
Calculate recommended daily screen time limits and a safety score for your child based on age, screen activity type, and current usage patterns. Based on guidelines from the American Academy of Pediatrics (AAP).
Formula
Safety Score (0–100) = Screen Time Compliance Score + Break Score + Sleep Score + Physical Activity Score
- Screen Time Compliance (0–25): 25 × max(0, 1 − excessRatio), where excessRatio = max(0, (effectiveHours − recLimit) / recLimit). effectiveHours = dailyHours × activityMultiplier.
- Activity Multipliers: Educational = 0.70, Creative = 0.75, Social = 0.85, Passive Entertainment = 1.10, Gaming = 1.20.
- Break Score (0–25): 25 × max(0, 1 − |breakMinutes − 20| / 60). Peaks at 20-minute intervals (20-20-20 rule).
- Sleep Score (0–25): 25 if within recommended range; linearly reduced by deficit or excess relative to range boundary.
- Physical Activity Score (0–25): min(25, 25 × actual / recommended). Capped at 25.
AAP Recommended Daily Screen Time Limits: <18 months: 0h | 18–24 months: 1h | 2–5 years: 1h | 6–12 years: 2h | 13–17 years: 3h.
Assumptions & References
- Screen time recommendations follow the American Academy of Pediatrics (AAP) 2016 guidelines on children and media.
- Break intervals are based on the 20-20-20 rule endorsed by the American Optometric Association to reduce digital eye strain.
- Sleep recommendations follow the National Sleep Foundation (2015) age-specific guidelines.
- Physical activity recommendations follow WHO Global Action Plan on Physical Activity (2018): ≥60 min/day for ages 5–17.
- Activity quality multipliers are derived from research on active vs. passive media use (Radesky & Christakis, 2016, Pediatrics).
- This calculator is for educational guidance only and does not replace professional medical or developmental advice.
- Video chatting is excluded from screen time limits for children under 18 months per AAP exception.