Pressure
TorrtoinHg
Convert torr (Torr) to inches of mercury (0 °C) (inHg).
Factor1 Torr = 0.03937007 inHg
Converter
Torr
Accepts numbers or expressions, e.g. 150 + 14.7
Result
inHg
Rendered to 6 significant figures.
Formula
Formula
inHg = Torr × 0.03937007
Multiply any value in torr by 0.03937007 to obtain the value in inches of mercury (0 °C).
Worked example
Convert 760 Torr to inHg.
- 01Start with 760 Torr.
- 02Multiply by the conversion factor: 760 × 0.03937007 = 29.9213 inHg.
Result760 Torr = 29.9213 inHg
Conversion table
| Torr | inHg |
|---|---|
| 1 | 0.03937 |
| 2 | 0.07874 |
| 5 | 0.19685 |
| 10 | 0.3937 |
| 20 | 0.7874 |
| 50 | 1.9685 |
| 100 | 3.937 |
| 200 | 7.874 |
| 500 | 19.685 |
| 1000 | 39.37 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from Torr to inHg?
1 Torr equals 0.03937007 inHg. To convert, multiply the value in torr by 0.03937007.
How do I convert 1 Torr to inHg?
1 Torr = 0.0393701 inHg. For any value, multiply by 0.03937007.
How do I convert inHg back to Torr?
Divide by the same factor — or equivalently, multiply by 25.40001. So 1 inHg = 25.4 Torr.
When would I need to convert torr to inch of mercury (0 °C)?
Pressure conversions between Torr and inHg 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).