EchocardiographyExercise StressMiscExercise Stress
Duke Treadmill ScoreMaximum Predicted Heart Rate (DOB)Mets & VO2 (Treadmill)
Maximum Predicted Heart Rate (Age)Max. Predicted Heart Rate AchievedRate Pressure Product

METs & VO2 According to Treadmill Speed & Grade


Treadmill Speed mph
Treadmill Grade %

Metabolic Equivalents METs
Effort Capacity



This calculator allows you to estimate the METs and VO2 given the treadmill speed and the grade. It is useful for situations when you want to use the non-standard treadmill protocol to find out exactly how much the patient can do.

Speed = Treadmill Speed * 26.8
Horizontal Component (HC) = Speed * 0.1
Vertical Component (VC) = Speed * 1.8 * Grade

VO2 = HC + VC + Rest = HC + VC + 3.5 mL/kg/min

Mets =

Treadmill Speed [mph]
Treadmill Grade [%]

Metabolic Equivalents [METs]
Effort Capacity Mets
Excellent >=13
Good 10-12
Fair 7-9
Reduced 5-6
Poor <=4

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Author: Dr. Chi-Ming Chow Developer: Edward Brawer Illustrator: Ellen Ho
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Disclaimer: The calculators provided are not meant to be a substitute for professional advise and are not to be used for medical diagnosis. All calculations must be confirmed before clinical use or diagnostic purposes by qualified medical professionals. The authors make no claims of the accuracy of the information contained herein. The authors make no claims whatsoever, expressed or implied, about the authenticity, accuracy, reliability, completeness or timeliness of the material, software, text, graphics and links given. In no event shall the authors, its suppliers, affiliates or any third parties be liable in any manner whatsoever for any damage arising upon use of any information provided.