Pressure
ftH₂OtoPa
Convert feet of water column (4 °C) (ftH₂O) to pascals (Pa).
Factor1 ftH₂O = 2989.067 Pa
Converter
ftH₂O
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Pa
Rendered to 6 significant figures.
Formula
Formula
Pa = ftH₂O × 2989.067
Multiply any value in feet of water column (4 °C) by 2989.067 to obtain the value in pascals.
Worked example
Convert 5 ftH₂O to Pa.
- 01Start with 5 ftH₂O.
- 02Multiply by the conversion factor: 5 × 2989.067 = 14945.3 Pa.
Result5 ftH₂O = 14945.3 Pa
Conversion table
| ftH₂O | Pa |
|---|---|
| 1 | 2989.1 |
| 2 | 5978.1 |
| 5 | 14945 |
| 10 | 29891 |
| 20 | 59781 |
| 50 | 1.4945e+5 |
| 100 | 2.9891e+5 |
| 200 | 5.9781e+5 |
| 500 | 1.4945e+6 |
| 1000 | 2.9891e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from ftH₂O to Pa?
1 ftH₂O equals 2989.067 Pa. To convert, multiply the value in feet of water column (4 °C) by 2989.067.
How do I convert 1 ftH₂O to Pa?
1 ftH₂O = 2989.07 Pa. For any value, multiply by 2989.067.
How do I convert Pa back to ftH₂O?
Divide by the same factor — or equivalently, multiply by 0.0003345526. So 1 Pa = 0.000334553 ftH₂O.
When would I need to convert foot of water column (4 °C) to pascal?
Pressure conversions between ftH₂O and Pa 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).