The six minute walk test measures how far you can walk on a flat corridor in six minutes, and it predicts outcomes in heart and lung disease remarkably well. This tool computes the distance a healthy person of your build should manage, so you can compare your own result.
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- Risk spectrum with your position marked
- Reference ranges from the original publication
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Scientific references
A corridor as a laboratory
Elaborate exercise testing needs treadmills and masks, but most daily life happens at walking pace. The six minute walk test bridges the gap with disarming simplicity, a flat thirty meter corridor, a timer, and instructions to cover as much ground as possible. The distance achieved correlates with formal exercise capacity, predicts hospitalization and survival in heart failure, COPD, and pulmonary hypertension, and responds honestly to treatment. It has become the default functional test in dozens of guidelines.
The reference equations
Enright and Sherrill measured hundreds of healthy volunteers in 1998 to establish what normal looks like. Their equations credit height and penalize age and weight, with separate versions for men and women. A healthy 60 year old man of average build typically predicts near 600 meters. Healthy populations cluster in a wide band, roughly 400 to 700 meters depending on the inputs, which is why a single number means little without the prediction beside it.
Percentage of predicted is the real answer
Divide your measured distance by the predicted value from this calculator. Above about 80 percent of predicted reads as preserved function. Falling under 350 meters absolute, or under roughly 60 percent of predicted, carries prognostic weight in chronic cardiopulmonary disease and usually prompts deeper evaluation. Serial testing matters more than single values, since a dropping trend signals progression before symptoms declare it.
Running your own test safely
Pick a flat quiet corridor or track, warm up briefly, then walk as far as you can in six minutes, slowing or pausing if needed. Chest pain, severe breathlessness, or dizziness means stop immediately. Bring the number and this prediction to your clinician rather than self interpreting extremes.