Stress
mmHgtoPa
Convert millimetres of mercury (stress) (mmHg) to pascals (stress) (Pa).
Factor1 mmHg = 133.3224 Pa
Converter
mmHg
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Pa
Rendered to 6 significant figures.
Formula
Formula
Pa = mmHg × 133.3224
Multiply any value in millimetres of mercury (stress) by 133.3224 to obtain the value in pascals (stress).
Worked example
Convert 1 mmHg to Pa.
- 01Start with 1 mmHg.
- 02Multiply by the conversion factor: 1 × 133.3224 = 133.322 Pa.
Result1 mmHg = 133.322 Pa
Conversion table
| mmHg | Pa |
|---|---|
| 1 | 133.32 |
| 2 | 266.64 |
| 5 | 666.61 |
| 10 | 1333.2 |
| 20 | 2666.4 |
| 50 | 6666.1 |
| 100 | 13332 |
| 200 | 26664 |
| 500 | 66661 |
| 1000 | 1.3332e+5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from mmHg to Pa?
1 mmHg equals 133.3224 Pa. To convert, multiply the value in millimetres of mercury (stress) by 133.3224.
How do I convert 1 mmHg to Pa?
1 mmHg = 133.322 Pa. For any value, multiply by 133.3224.
How do I convert Pa back to mmHg?
Divide by the same factor — or equivalently, multiply by 0.007500616. So 1 Pa = 0.00750062 mmHg.
When would I need to convert millimetre of mercury (stress) to pascal (stress)?
Stress conversions between mmHg and Pa are routine in mechanics-of-materials work: yield, ultimate and allowable-stress specification, Young's-modulus tables and structural-design code calculations. MPa and N/mm² dominate ISO and European datasheets, psi and ksi dominate US structural codes, and kgf/cm² and kgf/mm² appear in legacy JIS and heavy-engineering documentation. Stress is the same physical dimension as pressure but a different engineering quantity — this category is mechanics-of-materials, not process pressure.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).