Exercise Tolerance Calculator
For Cardiac & Pulmonary Rehab (Safe Zone Estimator)
Age (years):
Resting Heart Rate (beats per minute):
Systolic Blood Pressure (mmHg):
How long can you walk continuously?
Less than 2 minutes
2–5 minutes
5–10 minutes
More than 10 minutes
Breathlessness (Borg scale 0–10):
0 – No breathlessness
1–2 – Very slight
3–4 – Moderate
5–6 – Strong
7+ – Severe
Check Safe Exercise Zone
Note: This tool is for awareness only and does not replace medical advice. Always consult your cardiologist/physiotherapist.
