CO₂ Breathing Emission Calculator
Calculate CO₂ buildup from human breathing in indoor spaces. Assess air quality, health risks, and ventilation needs for optimal comfort and productivity.
Indoor Air Quality Matters
High CO₂ levels can cause drowsiness, reduced concentration, headaches, and even serious health risks. Proper ventilation is essential for health and productivity.
Room Configuration
Standard residential room with minimal ventilation
Affects initial CO₂ concentration level
Room Volume: 40.0 m³ (1412 ft³)
Occupancy & Activity
Office work, light household tasks
Typical outdoor level: 0.04% (400 PPM)
CO₂ Concentration Results
Final CO₂ Level
0.380%
Parts Per Million
3800 PPM
CO₂ Added
200.0 L
Air Changes
0.5 ACH
Warning: CO₂ levels will become unsafe (>5000 PPM) in 10.8 hours
Recommendations
Maintain current ventilation
Consider opening windows occasionally
Calculation Summary
CO₂ Health Effects Reference
| CO₂ Concentration | PPM Range | Health Effects |
|---|---|---|
| < 0.5% (< 5,000 PPM) | 400-5,000 | Permissible exposure limit. No adverse effects. |
| 0.5-1.5% (5,000-15,000 PPM) | 5,000-15,000 | Typically no effects, possible drowsiness. |
| 1.5-3% (15,000-30,000 PPM) | 15,000-30,000 | Mild respiratory stimulation for some people. |
| 3-4% (30,000-40,000 PPM) | 30,000-40,000 | Moderate respiratory stimulation, increased heart rate. |
| 4-5% (40,000-50,000 PPM) | 40,000-50,000 | Immediately dangerous to life or health. |
| > 8% (> 80,000 PPM) | > 80,000 | Dimmed sight, sweating, tremor, unconsciousness, death. |
Improving Indoor Air Quality
Natural Ventilation
Open windows for 10-15 minutes regularly. Cross-ventilation with windows on opposite sides is most effective.
Mechanical Systems
Install exhaust fans, HVAC systems, or air purifiers to maintain consistent air exchange rates.
Smart Monitoring
Use CO₂ monitors to track air quality in real-time and automate ventilation when levels rise.