Pressure
PatoftH₂O
Convert pascals (Pa) to feet of water column (4 °C) (ftH₂O).
Factor1 Pa = 0.0003345526 ftH₂O
Converter
Pa
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ftH₂O
Rendered to 6 significant figures.
Formula
Formula
ftH₂O = Pa × 0.0003345526
Multiply any value in pascals by 0.0003345526 to obtain the value in feet of water column (4 °C).
Worked example
Convert 10000 Pa to ftH₂O.
- 01Start with 10000 Pa.
- 02Multiply by the conversion factor: 10000 × 0.0003345526 = 3.34553 ftH₂O.
Result10000 Pa = 3.34553 ftH₂O
Conversion table
| Pa | ftH₂O |
|---|---|
| 1 | 0.00033455 |
| 2 | 0.00066911 |
| 5 | 0.0016728 |
| 10 | 0.0033455 |
| 20 | 0.0066911 |
| 50 | 0.016728 |
| 100 | 0.033455 |
| 200 | 0.066911 |
| 500 | 0.16728 |
| 1000 | 0.33455 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from Pa to ftH₂O?
1 Pa equals 0.0003345526 ftH₂O. To convert, multiply the value in pascals by 0.0003345526.
How do I convert 1 Pa to ftH₂O?
1 Pa = 0.000334553 ftH₂O. For any value, multiply by 0.0003345526.
How do I convert ftH₂O back to Pa?
Divide by the same factor — or equivalently, multiply by 2989.067. So 1 ftH₂O = 2989.07 Pa.
When would I need to convert pascal to foot of water column (4 °C)?
Pressure conversions between Pa 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).