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Stress

mmHgtokgf/mm²

Convert millimetres of mercury (stress) (mmHg) to kilograms-force per square millimetre (stress) (kgf/mm²).

Factor1 mmHg = 1.35951e-5 kgf/mm²

Converter

mmHg

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1.35951kgf/mm²

Rendered to 6 significant figures.

Formula

Formula
kgf/mm² = mmHg × 1.35951e-5

Multiply any value in millimetres of mercury (stress) by 1.35951e-5 to obtain the value in kilograms-force per square millimetre (stress).

Worked example

Convert 100000 mmHg to kgf/mm².

  1. 01Start with 100000 mmHg.
  2. 02Multiply by the conversion factor: 100000 × 1.35951e-5 = 1.35951 kgf/mm².
Result100000 mmHg = 1.35951 kgf/mm²

Conversion table

mmHgkgf/mm²
11.3595e-5
22.719e-5
56.7976e-5
100.00013595
200.0002719
500.00067976
1000.0013595
2000.002719
5000.0067976
10000.013595

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from mmHg to kgf/mm²?
1 mmHg equals 1.35951e-5 kgf/mm². To convert, multiply the value in millimetres of mercury (stress) by 1.35951e-5.
How do I convert 1 mmHg to kgf/mm²?
1 mmHg = 1.35951e-5 kgf/mm². For any value, multiply by 1.35951e-5.
How do I convert kgf/mm² back to mmHg?
Divide by the same factor — or equivalently, multiply by 73555.91. So 1 kgf/mm² = 73555.9 mmHg.
When would I need to convert millimetre of mercury (stress) to kilogram-force per square millimetre (stress)?
Stress conversions between mmHg and kgf/mm² 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).

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