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Pressure

kgf/mm²toftH₂O

Convert kilograms-force per square millimetre (kgf/mm²) to feet of water column (4 °C) (ftH₂O).

Factor1 kgf/mm² = 3280.84 ftH₂O

Converter

kgf/mm²

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

Result
3280.84ftH₂O

Rendered to 6 significant figures.

Formula

Formula
ftH₂O = kgf/mm² × 3280.84

Multiply any value in kilograms-force per square millimetre by 3280.84 to obtain the value in feet of water column (4 °C).

Worked example

Convert 1 kgf/mm² to ftH₂O.

  1. 01Start with 1 kgf/mm².
  2. 02Multiply by the conversion factor: 1 × 3280.84 = 3280.84 ftH₂O.
Result1 kgf/mm² = 3280.84 ftH₂O

Conversion table

kgf/mm²ftH₂O
13280.8
26561.7
516404
1032808
2065617
501.6404e+5
1003.2808e+5
2006.5617e+5
5001.6404e+6
10003.2808e+6

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kgf/mm² to ftH₂O?
1 kgf/mm² equals 3280.84 ftH₂O. To convert, multiply the value in kilograms-force per square millimetre by 3280.84.
How do I convert 1 kgf/mm² to ftH₂O?
1 kgf/mm² = 3280.84 ftH₂O. For any value, multiply by 3280.84.
How do I convert ftH₂O back to kgf/mm²?
Divide by the same factor — or equivalently, multiply by 0.0003048. So 1 ftH₂O = 0.0003048 kgf/mm².
When would I need to convert kilogram-force per square millimetre to foot of water column (4 °C)?
Pressure conversions between kgf/mm² and ftH₂O 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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