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Pressure

inHgtokgf/mm²

Convert inches of mercury (0 °C) (inHg) to kilograms-force per square millimetre (kgf/mm²).

Factor1 inHg = 0.0003453156 kgf/mm²

Converter

inHg

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

Result
0.345316kgf/mm²

Rendered to 6 significant figures.

Formula

Formula
kgf/mm² = inHg × 0.0003453156

Multiply any value in inches of mercury (0 °C) by 0.0003453156 to obtain the value in kilograms-force per square millimetre.

Worked example

Convert 1000 inHg to kgf/mm².

  1. 01Start with 1000 inHg.
  2. 02Multiply by the conversion factor: 1000 × 0.0003453156 = 0.345316 kgf/mm².
Result1000 inHg = 0.345316 kgf/mm²

Conversion table

inHgkgf/mm²
10.00034532
20.00069063
50.0017266
100.0034532
200.0069063
500.017266
1000.034532
2000.069063
5000.17266
10000.34532

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from inHg to kgf/mm²?
1 inHg equals 0.0003453156 kgf/mm². To convert, multiply the value in inches of mercury (0 °C) by 0.0003453156.
How do I convert 1 inHg to kgf/mm²?
1 inHg = 0.000345316 kgf/mm². For any value, multiply by 0.0003453156.
How do I convert kgf/mm² back to inHg?
Divide by the same factor — or equivalently, multiply by 2895.902. So 1 kgf/mm² = 2895.9 inHg.
When would I need to convert inch of mercury (0 °C) to kilogram-force per square millimetre?
Pressure conversions between inHg and kgf/mm² are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
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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