Pressure
TorrtocmH₂O
Convert torr (Torr) to centimetres of water column (cmH₂O).
Factor1 Torr = 1.35951 cmH₂O
Converter
Torr
Accepts numbers or expressions, e.g. 150 + 14.7
Result
cmH₂O
Rendered to 6 significant figures.
Formula
Formula
cmH₂O = Torr × 1.35951
Multiply any value in torr by 1.35951 to obtain the value in centimetres of water column.
Worked example
Convert 100 Torr to cmH₂O.
- 01Start with 100 Torr.
- 02Multiply by the conversion factor: 100 × 1.35951 = 135.951 cmH₂O.
Result100 Torr = 135.951 cmH₂O
Conversion table
| Torr | cmH₂O |
|---|---|
| 1 | 1.3595 |
| 2 | 2.719 |
| 5 | 6.7975 |
| 10 | 13.595 |
| 20 | 27.19 |
| 50 | 67.975 |
| 100 | 135.95 |
| 200 | 271.9 |
| 500 | 679.75 |
| 1000 | 1359.5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from Torr to cmH₂O?
1 Torr equals 1.35951 cmH₂O. To convert, multiply the value in torr by 1.35951.
How do I convert 1 Torr to cmH₂O?
1 Torr = 1.35951 cmH₂O. For any value, multiply by 1.35951.
How do I convert cmH₂O back to Torr?
Divide by the same factor — or equivalently, multiply by 0.7355592. So 1 cmH₂O = 0.735559 Torr.
When would I need to convert torr to centimetre of water column?
Pressure conversions between Torr and cmH₂O 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).