▸ processconvert
Pressure

ftH₂OtoMPa

Convert feet of water column (4 °C) (ftH₂O) to megapascals (MPa).

Factor1 ftH₂O = 0.002989067 MPa

Converter

ftH₂O

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

Result
2.98907MPa

Rendered to 6 significant figures.

Formula

Formula
MPa = ftH₂O × 0.002989067

Multiply any value in feet of water column (4 °C) by 0.002989067 to obtain the value in megapascals.

Worked example

Convert 1000 ftH₂O to MPa.

  1. 01Start with 1000 ftH₂O.
  2. 02Multiply by the conversion factor: 1000 × 0.002989067 = 2.98907 MPa.
Result1000 ftH₂O = 2.98907 MPa

Conversion table

ftH₂OMPa
10.0029891
20.0059781
50.014945
100.029891
200.059781
500.14945
1000.29891
2000.59781
5001.4945
10002.9891

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ftH₂O to MPa?
1 ftH₂O equals 0.002989067 MPa. To convert, multiply the value in feet of water column (4 °C) by 0.002989067.
How do I convert 1 ftH₂O to MPa?
1 ftH₂O = 0.00298907 MPa. For any value, multiply by 0.002989067.
How do I convert MPa back to ftH₂O?
Divide by the same factor — or equivalently, multiply by 334.5526. So 1 MPa = 334.553 ftH₂O.
When would I need to convert foot of water column (4 °C) to megapascal?
Pressure conversions between ftH₂O and MPa 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).

Related conversions