6 Minute Walk Test Calculator

The 6-Minute Walk Test (6MWT) is a simple, low-cost exercise test that measures the distance a person can walk on a flat surface in six minutes. It is widely used to assess functional capacity and exercise tolerance in patients with cardiopulmonary conditions such as heart failure, COPD, and pulmonary hypertension. It can also guide treatment decisions and monitor a patient's response to therapy.

For a 30-year-old male of average height (around 175 cm) and weight (around 75 kg), the predicted 6MWD is typically around 700–730 meters. Use this calculator with your exact measurements to get a personalized reference value. Keep in mind this is a statistical prediction based on healthy population norms, not a diagnostic threshold.

For women, the Enright & Sherrill equation is: 6MWD = (2.11 × height in cm) − (2.29 × weight in kg) − (5.78 × age in years) + 667. The lower limit of normal is 139 meters below this predicted value. This calculator handles the formula automatically — just select Female and enter your details.

No. The 6MWT is not a diagnostic test on its own. A low 6MWD may indicate reduced functional capacity and can have prognostic value in conditions like heart failure or pulmonary hypertension, but it must be interpreted alongside other clinical assessments and diagnostic tests relevant to the suspected condition.

The 6MWT is inexpensive, easy to administer, and requires minimal equipment — just a flat 30-meter corridor. It reflects real-world functional capacity better than peak exercise tests for many patients. It is well-tolerated even by elderly or severely limited patients and has strong evidence supporting its use as a prognostic and outcome measure.

The lower limit of normal is the minimum predicted distance considered clinically acceptable. For men it is calculated as the predicted 6MWD minus 153 meters, and for women as the predicted 6MWD minus 139 meters. Patients walking less than this lower limit may have clinically significant functional impairment.

This calculator uses the Enright & Sherrill (1998) reference equations derived from a large healthy adult population. For men: 6MWD = (7.57 × height) − (5.02 × age) − (1.76 × weight) − 309. For women: 6MWD = (2.11 × height) − (2.29 × weight) − (5.78 × age) + 667. These are the most widely cited and validated equations in clinical practice.

Absolute contraindications include unstable angina or a myocardial infarction within the past month. Relative contraindications include resting heart rate above 120 bpm, blood pressure above 180/100 mmHg, and severe orthopedic problems affecting walking. Always consult a healthcare professional before performing the test if you have any underlying medical conditions.