Pressure
cmH₂OtoPa
Convert centimetres of water column (cmH₂O) to pascals (Pa).
Factor1 cmH₂O = 98.0665 Pa
Converter
cmH₂O
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Pa
Rendered to 6 significant figures.
Formula
Formula
Pa = cmH₂O × 98.0665
Multiply any value in centimetres of water column by 98.0665 to obtain the value in pascals.
Worked example
Convert 1 cmH₂O to Pa.
- 01Start with 1 cmH₂O.
- 02Multiply by the conversion factor: 1 × 98.0665 = 98.0665 Pa.
Result1 cmH₂O = 98.0665 Pa
Conversion table
| cmH₂O | Pa |
|---|---|
| 1 | 98.067 |
| 2 | 196.13 |
| 5 | 490.33 |
| 10 | 980.67 |
| 20 | 1961.3 |
| 50 | 4903.3 |
| 100 | 9806.6 |
| 200 | 19613 |
| 500 | 49033 |
| 1000 | 98067 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from cmH₂O to Pa?
1 cmH₂O equals 98.0665 Pa. To convert, multiply the value in centimetres of water column by 98.0665.
How do I convert 1 cmH₂O to Pa?
1 cmH₂O = 98.0665 Pa. For any value, multiply by 98.0665.
How do I convert Pa back to cmH₂O?
Divide by the same factor — or equivalently, multiply by 0.01019716. So 1 Pa = 0.0101972 cmH₂O.
When would I need to convert centimetre of water column to pascal?
Pressure conversions between cmH₂O 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).