Table Of Contents
Torr to millimeters of mercury Conversion
1 Torr (Torr) is equal to 0.9999998575 millimeters of mercury (mmHg).
1 Torr = 0.9999998575 mmHg
or
1 mmHg = 1.000000142 Torr
Formula
To convert a pressure from Torr (Torr) to millimeters of mercury (mmHg), divide the pressure in Torr by 1.000000142
p(mmHg) = p(Torr) / 1.000000142
Examples:
Convert 1 Torr to millimeters of mercury:
p(mmHg) = 1Torr / 1.000000142 = 0.9999998575 mmHg
Conversion table
| Torr (Torr) | Millimeters of mercury (mmHg) |
|---|---|
| 1 Torr | 0.999999858 mmHg |
| 2 Torr | 1.999999715 mmHg |
| 3 Torr | 2.999999573 mmHg |
| 5 Torr | 4.999999288 mmHg |
| 10 Torr | 9.999998575 mmHg |
| 20 Torr | 19.999997151 mmHg |
| 25 Torr | 24.999996438 mmHg |
| 50 Torr | 49.999992877 mmHg |
| 100 Torr | 99.999985753 mmHg |
| 250 Torr | 249.999964383 mmHg |
| 500 Torr | 499.999928767 mmHg |
| 1000 Torr | 999.999857534 mmHg |
| Millimeters of mercury (mmHg) | Torr (Torr) |
|---|---|
| 1 mmHg | 1.000000142 Torr |
| 2 mmHg | 2.000000285 Torr |
| 3 mmHg | 3.000000427 Torr |
| 5 mmHg | 5.000000712 Torr |
| 10 mmHg | 10.000001425 Torr |
| 20 mmHg | 20.000002849 Torr |
| 25 mmHg | 25.000003562 Torr |
| 50 mmHg | 50.000007123 Torr |
| 100 mmHg | 100.000014247 Torr |
| 250 mmHg | 250.000035617 Torr |
| 500 mmHg | 500.000071233 Torr |
| 1000 mmHg | 1000.000142466 Torr |
Frequently asked questions
How do I convert Torr to millimeters of mercury?
Divide the value in Torr by 1.000000142 to get the result in millimeters of mercury. For example, 5 Torr ÷ 1.000000142 = 4.999999288 mmHg.
How many millimeters of mercury are in 1 Torr?
1 Torr (Torr) is equal to 0.999999858 millimeters of mercury (mmHg).
How do I convert millimeters of mercury back to Torr?
Use the inverse operation: multiply the value in millimeters of mercury by 1.000000142 to get the result in Torr.
How accurate is the Torr to millimeters of mercury conversion?
The converter multiplies by the conversion factor 1.000000142 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- ISO 80000-4:2019 — Quantities and units — Part 4: Mechanics
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- Resolution 4 of the 10th CGPM (1954): Definition of the standard atmosphere