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Pressure

cmH₂Otokgf/mm²

Convert centimetres of water column (cmH₂O) to kilograms-force per square millimetre (kgf/mm²).

Factor1 cmH₂O = 1e-5 kgf/mm²

Converter

cmH₂O

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

Result
1kgf/mm²

Rendered to 6 significant figures.

Formula

Formula
kgf/mm² = cmH₂O × 1e-5

Multiply any value in centimetres of water column by 1e-5 to obtain the value in kilograms-force per square millimetre.

Worked example

Convert 100000 cmH₂O to kgf/mm².

  1. 01Start with 100000 cmH₂O.
  2. 02Multiply by the conversion factor: 100000 × 1e-5 = 1 kgf/mm².
Result100000 cmH₂O = 1 kgf/mm²

Conversion table

cmH₂Okgf/mm²
11e-5
22e-5
55e-5
100.0001
200.0002
500.0005
1000.001
2000.002
5000.005
10000.01

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cmH₂O to kgf/mm²?
1 cmH₂O equals 1e-5 kgf/mm². To convert, multiply the value in centimetres of water column by 1e-5.
How do I convert 1 cmH₂O to kgf/mm²?
1 cmH₂O = 1e-5 kgf/mm². For any value, multiply by 1e-5.
How do I convert kgf/mm² back to cmH₂O?
Divide by the same factor — or equivalently, multiply by 100000. So 1 kgf/mm² = 100000 cmH₂O.
When would I need to convert centimetre of water column to kilogram-force per square millimetre?
Pressure conversions between cmH₂O 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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