6 Minute Walk Test (6MWT) Calculator
Estimate predicted six-minute walk distance, lower limit of normal, and percent of predicted from age, sex, height, weight, and distance walked.
Not medical advice. Results use published reference equations for educational purposes only. Always verify independently and do not use this tool alone to guide patient care.
About the 6 Minute Walk Test
The 6 Minute Walk Test (6MWT) measures how far someone can walk in six minutes on a flat surface. It is a simple, standardized way to assess functional capacity and response to therapy in many cardiopulmonary conditions.
What it measures
- •Submaximal exercise capacity over six minutes
- •Integrated heart, lung, circulation, and muscle function
- •Change over time with treatment or rehab
Equations used
- •Men: (7.57 × height) − (5.02 × age) − (1.76 × weight) − 309
- •Women: (2.11 × height) − (2.29 × weight) − (5.78 × age) + 667
- •LLN: predicted − 153 m (men) or − 139 m (women)
Inputs explained
- •Height in centimeters, weight in kilograms
- •Age in years (adult equations)
- •Distance walked is the total 6MWD in meters
Clinical context
- •Used in heart failure, PH, COPD, and ILD assessment
- •Low % predicted or distance below LLN may signal worse function
- •Always interpret with the full clinical picture
References
- Enright PL, Sherrill DL. Reference equations for the six-minute walk in healthy adults. Am J Respir Crit Care Med. 1998;158(5):1384–1387.
- Crapo RO et al. ATS Statement: Guidelines for the Six-Minute Walk Test. Am J Respir Crit Care Med. 2002;166:111–117.