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Pressure

ksitoinH₂O

Convert kilopounds-force per square inch (ksi) to inches of water column (4 °C) (inH₂O).

Factor1 ksi = 27679.9 inH₂O

Converter

ksi

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

Result
27679.9inH₂O

Rendered to 6 significant figures.

Formula

Formula
inH₂O = ksi × 27679.9

Multiply any value in kilopounds-force per square inch by 27679.9 to obtain the value in inches of water column (4 °C).

Worked example

Convert 1 ksi to inH₂O.

  1. 01Start with 1 ksi.
  2. 02Multiply by the conversion factor: 1 × 27679.9 = 27679.9 inH₂O.
Result1 ksi = 27679.9 inH₂O

Conversion table

ksiinH₂O
127680
255360
51.3840e+5
102.7680e+5
205.5360e+5
501.3840e+6
1002.7680e+6
2005.5360e+6
5001.384e+7
10002.768e+7

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ksi to inH₂O?
1 ksi equals 27679.9 inH₂O. To convert, multiply the value in kilopounds-force per square inch by 27679.9.
How do I convert 1 ksi to inH₂O?
1 ksi = 27679.9 inH₂O. For any value, multiply by 27679.9.
How do I convert inH₂O back to ksi?
Divide by the same factor — or equivalently, multiply by 3.612729e-5. So 1 inH₂O = 3.61273e-5 ksi.
When would I need to convert kilopound-force per square inch to inch of water column (4 °C)?
Pressure conversions between ksi and inH₂O 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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