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Torr to Millimeters of Mercury (Torr to mmHg) Converter

1 torr (Torr) = 1 millimeters of mercury (mmHg). To convert torr to millimeters of mercury, multiply by 1: 25 Torr × 1 = 25 mmHg. Also searched as torr to millimetres of mercury.

1 Torr = 0.9999998575 mmHg
Convert the other way: Millimeters of Mercury to Torr

Quick facts

How to convert torr to millimeters of mercury

  1. Take the value in torr.
  2. Multiply it by 1 (the number of millimeters of mercury in one torr).
  3. Round the result to the precision you need.
mmHg = Torr × 1

Worked example: 25 Torr × 1 = 25 mmHg.

To convert millimeters of mercury back to torr, multiply by 1, or divide by 1.

Source: NIST SP 811 (2008), Appendix B.

Torr to Millimeters of Mercury conversion table

Torr to Millimeters of Mercury conversion table
Torr [Torr]Millimeters of Mercury [mmHg]
0.01 Torr0.0099999986 mmHg
0.1 Torr0.0999999858 mmHg
1 Torr0.9999998575 mmHg
2 Torr1.9999997151 mmHg
3 Torr2.9999995726 mmHg
5 Torr4.9999992877 mmHg
10 Torr9.9999985753 mmHg
20 Torr19.9999971507 mmHg
50 Torr49.9999928767 mmHg
100 Torr99.9999857534 mmHg
1000 Torr999.9998575337 mmHg

Torr to mmHg chart from 1 to 100

Millimeters of Mercury to Torr conversion table

Millimeters of Mercury to Torr conversion table
Millimeters of Mercury [mmHg]Torr [Torr]
0.01 mmHg0.0100000014 Torr
0.1 mmHg0.1000000142 Torr
1 mmHg1.0000001425 Torr
2 mmHg2.0000002849 Torr
3 mmHg3.0000004274 Torr
5 mmHg5.0000007123 Torr
10 mmHg10.0000014247 Torr
20 mmHg20.0000028493 Torr
50 mmHg50.0000071233 Torr
100 mmHg100.0000142466 Torr
1000 mmHg1000.0001424663 Torr

Torr vs Millimeters of Mercury

TorrMillimeter of Mercury
SymbolTorrmmHg
Equals1 Torr = 1 mmHg1 mmHg = 1 Torr

What is a torr?

Approximately equal to one millimeter of mercury. Used in vacuum and laboratory pressure measurement.

What is a millimeter of mercury?

The pressure exerted by a 1-millimeter column of mercury. Used for blood pressure and barometric readings.

Frequently asked questions

How many millimeters of mercury are in a torr?

There are 1 millimeters of mercury in 1 torr (1 Torr = 0.9999998575 mmHg).

How many torr are in a millimeter of mercury?

There are 1 torr in 1 millimeter of mercury (1 mmHg = 1.0000001425 Torr).

How do I convert torr to millimeters of mercury?

Multiply the number of torr by 1. For example, 10 Torr × 1 = 10 mmHg. To convert back, multiply by 1.

What is 10 Torr in millimeters of mercury?

10 Torr = 10 mmHg.

What is 100 Torr in millimeters of mercury?

100 Torr = 100 mmHg.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), Appendix B). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.