Pressure
TorrtommHg
Convert torr (Torr) to millimetres of mercury (mmHg).
Factor1 Torr = 0.9999999 mmHg
Converter
Torr
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mmHg
Rendered to 6 significant figures.
Formula
Formula
mmHg = Torr × 0.9999999
Multiply any value in torr by 0.9999999 to obtain the value in millimetres of mercury.
Worked example
Convert 760 Torr to mmHg.
- 01Start with 760 Torr.
- 02Multiply by the conversion factor: 760 × 0.9999999 = 760 mmHg.
Result760 Torr = 760 mmHg
Conversion table
| Torr | mmHg |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 20 | 20 |
| 50 | 50 |
| 100 | 100 |
| 200 | 200 |
| 500 | 500 |
| 1000 | 1000 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from Torr to mmHg?
1 Torr equals 0.9999999 mmHg. To convert, multiply the value in torr by 0.9999999.
How do I convert 1 Torr to mmHg?
1 Torr = 1 mmHg. For any value, multiply by 0.9999999.
How do I convert mmHg back to Torr?
Divide by the same factor — or equivalently, multiply by 1. So 1 mmHg = 1 Torr.
When would I need to convert torr to millimetre of mercury?
Pressure conversions between Torr and mmHg 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).