Millimeters of mercury at standard gravity.
mmHgs to Technical atmospheres Converter — mmHg to at
Convert mmHg (mmHg) to Technical atmosphere (at) using the exact conversion factor (1 mmhg = 0.00135951 technical atmosphere). See the formula, worked examples, and conversion table.
mmHgs to Technical atmospheres converter
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.
Technical atmosphere is kilogram-force per square centimeter.
Result = input x 133.3223874 / 98066.5.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting mmHgs to Technical atmospheres
mmHg and Technical atmosphere both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Millimeters of mercury at standard gravity, and technical atmosphere is kilogram-force per square centimeter.
Formula
technical atmospheres = mmhgs × 0.00135951
This factor comes from each unit's defined relationship to the category's base unit: 1 mmhg equals 133.322387415 base units, and 1 technical atmosphere equals 98066.5 base units, so dividing one by the other gives the direct mmhg-to-technical atmosphere factor of 0.00135951.
Simple example
1 mmHg × 0.00135951 = 0.00135951 at
1 mmhg = 0.00135951 technical atmospheres.
Real-world example
100 mmHg × 0.00135951 = 0.135951 at
100 mmhgs = 0.135951 technical atmospheres.
Conversion table
| mmHg (mmHg) | Technical atmosphere (at) |
|---|---|
| 1 mmHg | 0.00135951 at |
| 10 mmHg | 0.0135951 at |
| 50 mmHg | 0.0679755 at |
| 100 mmHg | 0.135951 at |
| 500 mmHg | 0.679755 at |
| 1,000 mmHg | 1.35951 at |
Reverse conversion: Technical atmosphere to mmHg
0.00135951 at × 735.5591353 = 1 mmHg
0.00135951 technical atmospheres = 1 mmhg.
mmhgs = technical atmospheres × 735.559135277
For a page dedicated to this direction, see Technical atmosphere to mmHg.
Understanding the mmHg (mmHg)
Millimeters of mercury at standard gravity.
Understanding the Technical atmosphere (at)
Technical atmosphere is kilogram-force per square centimeter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many technical atmospheres are in 1 mmhg?
1 mmhg equals 0.00135951 technical atmospheres, using the exact defined conversion factor rather than an estimate.
How do I convert mmhg to technical atmosphere?
Multiply the mmhg value by 0.00135951. The converter above does this instantly to whatever precision you set.
How do I convert technical atmosphere back to mmhg?
Use the reverse factor: 1 technical atmosphere equals 735.5591353 mmhgs. You can also use the swap control in the converter above to flip the direction instantly.
What is a mmhg?
mmHg (mmHg) is a unit of engineering.
What is a technical atmosphere?
Technical atmosphere (at) is a unit of engineering.
Is the mmhg to technical atmosphere conversion exact?
Yes. Both mmhg and technical atmosphere are defined by fixed standards rather than physical artifacts, so the factor of 0.00135951 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.