mmHg to Watt
Compare mmHg and Watt. See why these engineering units measure different physical quantities, plus links to valid conversions.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
mmHg and Watt measure different quantities, so no single result applies.
Reserved above the conversion cards and below the converter.
Formula
mmHg (mmHg) measures pressure and mechanical stress, while Watt (W) measures power. These are different physical quantities, so there is no single multiplication factor that converts one into the other.
mmHg relates to its own pressure and mechanical stress base unit by a factor of 133.322. W relates to its own power base unit by a factor of 1.
Conversion table
| mmHg (mmHg) | 133.322 × pressure and mechanical stress base unit |
| Watt (W) | 1 × power base unit |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
Can mmHg be converted to Watt?
Not directly. mmHg measures pressure and mechanical stress and Watt measures power. Converting between different physical quantities needs an extra physical relationship (such as area, distance, or time), not just a unit ratio.
What is mmHg used for?
The mmHg (mmHg) is a unit of pressure and mechanical stress. Millimeters of mercury at standard gravity.
What is Watt used for?
The Watt (W) is a unit of power. The watt is one joule per second.
Why does the converter show an incompatible units message?
The Universal Converter only calculates a numeric result when both units share the same physical dimension. Since mmHg and Watt don't, the tool flags them as not directly compatible rather than returning a meaningless number.
What should I convert mmHg to instead?
Use another pressure and mechanical stress unit, such as one of the related mmHg conversions linked below.
What should I convert Watt to instead?
Use another power unit, such as one of the related Watt conversions linked below.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page compares mmHg (mmHg) and Watt (W) within the engineering converter.
Millimeters of mercury at standard gravity. The watt is one joule per second.
Because mmHg measures pressure and mechanical stress and Watt measures power, the two units are not directly convertible: there is no fixed ratio that turns one into the other without additional information.
The calculator above will report that these units are not compatible. For a working result, choose two units from the same measurement family — see the related conversions below.