I would be surprised to find an existing component that does that but it would not be hard to create! The formula is quite simple and is based on the table:
Inputs are Age, Mass, and HR.
where HR is beats per minute (bpm).
Result will be in Watts. Divide by 1.8 (surface area of the human body - dubois formula) to get W/m2.
For MET, divide the W/m2 by 55.
I am sure that you aware that there is some degree of inaccuracy with Part3 of ISO 8996. The standard rates this method has having a +/- 10% accuracy, whereas a VO2 study is the most reliable way to determine MET.