6 Minute Walk Test Calculator
The 6 minute walk test calculator provides reference values for the distance an adult should walk during six minutes. We use the 6 minute walk distance (6MWD) to assess a patient's functional status, their response to therapy, and for the prognosis of different cardiopulmonary conditions. Please read the article below to find out more about the six minute walk test (6MWT), its interpretation, and how to find the 6 minute walk test norms.
If you are interested in another test providing both diagnostic and prognostic information about patients with suspected coronary heart disease, please check the Duke treadmill score calculator. You can also check how many calories you burn by walking with our steps to calories calculator or the walking calorie calculator.
We try our best to make our Omni Calculators as precise and reliable as possible. However, this tool can never replace professional medical advice.
What is a six minute walk test (6MWT)?
A 6 minute walk test is a submaximal exercise test that measures the distance walked over the span of 6 minutes. This is a quick and inexpensive measure of physical function, as it reflects the capacity to perform everyday activities. It can be used to assess the functional status of patients, their response to treatment, and their prognosis. A patient's 6 minute walk distance is reduced by several types of diseases, including obstructive lung disease, heart failure, arthritis, and neuromuscular disease.
Advantages of 6 minute walk test:
 Simplicity;
 Low cost;
 Easy to standardize; and
 Low patient burden (feasible even for elderly and frail patients).
A detailed description of how to perform a standardized six minute walk test can be found in the
.6 minute walk test  predicted distance equations
Distances walked by healthy adults may vary significantly.
to predict walking distance in healthy adults. To do that, they took measurements from 117 healthy men and 173 healthy women aged 40 to 80 years.We use the equations below to find the 6 minute walk test predicted distance 6MWD
:
MEN:
6MWD = (7.57 × height) – (5.02 × age) – (1.76 × weight) – 309
WOMEN:
6MWD = (2.11 × height) – (2.29 × weight) – (5.78 × age) + 667
where:

6MWD
— 6 minute walk distance, expressed in meters; 
height
— expressed in cm; 
weight
— expressed in kg; and 
age
— expressed in years.
Don't worry about switching between different units. Our 6 minute walk test calculator has a builtin converter.
6 minute walk test — norms
The equations described above predict the distance that a patient should walk based on their height, weight, age, and gender. The authors have determined the lower limits of the norm, which are:
MEN:
lower limit = 6MWD − 153
WOMEN:
lower limit = 6MWD − 139
where:
6MWD
— 6 minute walk distance expressed in meters.
A low 6MWT result is prognostically useful but is nondiagnostic, as it doesn't tell us the reason for a low result.
Factors that decrease and increase the 6MWT result:
Decreasing  Increasing 

Shorter height  Taller height 
Female sex  Male sex 
Older age  Increased motivation 
Higher body weight  Higher muscle mass 
Cardiovascular or pulmonary disease  Past performance of the test 
6 minute walk test calculator — a practical example
Let's see how the 6 minute walk test calculator works using an exemplary patient. He's 72 years old, 177 cm (5.8 ft) tall, and weighs 80 kg (176 lb). He performed a six minute walk test, and the distance he managed was 432 meters (328 ft). Let's check if that's the norm.

We need to start by calculating 6 minute walk test predicted distance:
6MWD = (7.57 × height) – (5.02 × age) – (1.76 × weight) – 309
6MWD = (7.57 × 177 cm) – (5.02 × 72 yo) – (1.76 × 80 kg) – 309
6MWD = 1340 – 361 – 141 – 309
6MWD = 529 meters

Now we can check if this result falls into 6 minute walk test norm:
lower limit = 6MWD − 153
lower limit = 529 − 153
lower limit = 376 meters
The patient result of 432 meters is above the lower limit.

Finally, we can calculate the percentage our patient managed compared to the expected distance of a healthy patient:
% expected = 423 / 529 × 100%
% expected = 0.82 × 100%
% expected = 82%