PFT Results
Get accurate pulmonary function test calculations instantly with our free online PFT calculator. Simply enter your age, height, gender, and measured values to receive comprehensive lung function analysis based on established medical standards.
What is a Pulmonary Function Test (PFT)?
A Pulmonary Function Test measures how well your lungs work by evaluating lung volume, capacity, rates of flow, and gas exchange. These tests help healthcare providers diagnose and monitor respiratory conditions like asthma, COPD, and other lung diseases.
Key Measurements Our PFT Calculator Provides:
FEV1 (Forced Expiratory Volume in 1 second)
- Measures the amount of air you can forcefully exhale in one second
- Critical indicator for diagnosing airway obstruction
- Normal values vary by age, height, and gender
FVC (Forced Vital Capacity)
- Total amount of air you can exhale after taking the deepest breath possible
- Helps assess overall lung function and capacity
- Essential for detecting restrictive lung diseases
FEV1/FVC Ratio
- Automatically calculated percentage comparing FEV1 to FVC
- Key diagnostic tool for distinguishing between obstructive and restrictive patterns
- Normal ratio is typically above 70-75%
Why Use Our PFT Calculator?
â Instant Results – Get your pulmonary function analysis in seconds
â Easy to Use – Simple interface requiring only basic measurements
â Free Access – No registration or payment required
â Mobile Friendly – Works perfectly on all devices
â Educational – Learn about your lung health with detailed explanations
How to Use the PFT Calculator
- Select your gender from the dropdown menu
- Enter your age in years
- Input your height in centimeters or inches
- Add your measured FEV1 value in liters
- Enter your measured FVC value in liters
- Click “Calculate PFT” for instant results
Who Can Benefit from PFT Calculations?
- Healthcare Professionals – Quick reference tool for patient consultations
- Medical Students – Learning aid for respiratory medicine
- Patients – Understanding your test results better
- Researchers – Analyzing lung function data
- Fitness Enthusiasts – Monitoring respiratory health
Understanding Your Results
Our calculator provides predicted normal values based on your demographics and compares them to your measured values. Results include:
- Predicted normal FEV1 and FVC values for your age, height, and gender
- Percentage of predicted values for your measurements
- FEV1/FVC ratio calculation
- Interpretation guidelines for common patterns
Important Medical Disclaimer
This PFT calculator is designed for educational and informational purposes only. It should not replace professional medical advice, diagnosis, or treatment. Always consult with qualified healthcare providers for proper interpretation of pulmonary function test results and medical decisions.
Frequently Asked Questions
Q: How accurate is this PFT calculator?
A: Our calculator uses established reference equations commonly used in clinical practice. However, individual results should always be interpreted by healthcare professionals.
Q: What units does the calculator accept?
A: The calculator accepts height in centimeters and lung volumes in liters, which are standard medical units for PFT measurements.
Q: Can I save my results?
A: Currently, results are displayed instantly but not saved. We recommend taking screenshots or writing down important values for your records.
Q: Is my data stored or shared?
A: No, all calculations are performed locally in your browser. No personal data is stored or transmitted to our servers.