Peak Flow Zone Calculator
Understanding Peak Flow Zones
A peak flow meter measures how well air moves out of your lungs. Comparing your current peak flow reading to your "personal best" helps you understand how well your asthma is controlled.
Inputs:- Personal Best Peak Flow: The highest number you can achieve over a 2-3 week period when your asthma is under good control.
- Current Peak Flow: The highest of three readings you've taken just now.
- Green Zone (80-100% of Personal Best): Signals that your asthma is under good control.
- Yellow Zone (50-79% of Personal Best): Signals caution. Your airways are narrowing, and you may need to follow your action plan for this zone.
- Red Zone (Below 50% of Personal Best): A medical alert. You should take immediate action as directed by your doctor and your asthma action plan.
MEDICAL DISCLAIMER
This tool is for informational purposes only. It is not a substitute for a professional medical diagnosis or a personalized Asthma Action Plan from your doctor. Always follow the specific instructions provided by your healthcare provider.
Check your asthma zone based on your peak flow reading.
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