Torrs to Millimeters of Mercury Converter

How to convert torrs to millimeters of mercury

FormulammHg = Torr × 0.9999998575

Multiply the value in torrs by 0.9999998575. To go the other way, multiply by 1.000000142 (or divide by 0.9999998575).

A torr is smaller than a millimeter of mercury: it takes 1.000000142 torrs to make one millimeter of mercury.

Worked examples

1 torr1 Torr × 0.9999998575 = 0.9999998575 mmHg
5 torrs5 Torr × 0.9999998575 = 4.999999288 mmHg
10 torrs10 Torr × 0.9999998575 = 9.999998575 mmHg
20 torrs20 Torr × 0.9999998575 = 19.99999715 mmHg
100 torrs100 Torr × 0.9999998575 = 99.99998575 mmHg

Torrs to millimeters of mercury conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Torrs to millimeters of mercury: 0.1–10 Torr
Torrs (Torr)	Millimeters of mercury (mmHg)
0.1 Torr	0.099999986 mmHg
0.25 Torr	0.24999996 mmHg
0.5 Torr	0.49999993 mmHg
1 Torr	0.99999986 mmHg
2 Torr	1.9999997 mmHg
3 Torr	2.9999996 mmHg
4 Torr	3.9999994 mmHg
5 Torr	4.9999993 mmHg
6 Torr	5.9999991 mmHg
7 Torr	6.999999 mmHg
8 Torr	7.9999989 mmHg
9 Torr	8.9999987 mmHg
10 Torr	9.9999986 mmHg

Torrs to millimeters of mercury: 12–1,000 Torr
Torrs (Torr)	Millimeters of mercury (mmHg)
12 Torr	11.999998 mmHg
15 Torr	14.999998 mmHg
20 Torr	19.999997 mmHg
25 Torr	24.999996 mmHg
30 Torr	29.999996 mmHg
40 Torr	39.999994 mmHg
50 Torr	49.999993 mmHg
75 Torr	74.999989 mmHg
100 Torr	99.999986 mmHg
250 Torr	249.99996 mmHg
500 Torr	499.99993 mmHg
1,000 Torr	999.99986 mmHg

About the units

Torr (Torr)

Exactly 1/760 of a standard atmosphere; used in vacuum technology. One torr equals 133.3223684 pascals (Pa).

Millimeter of mercury (mmHg)

The conventional mmHg is 133.322387415 Pa. Blood pressure is measured in mmHg (e.g. 120/80).

Frequently asked questions

How many millimeters of mercury are in one torr?

There are 0.9999998575 millimeters of mercury in one torr, and this value is exact by definition.

How do I convert torrs to millimeters of mercury?

Multiply the number of torrs by 0.9999998575. For example, 10 Torr × 0.9999998575 = 9.999998575 mmHg.

How many torrs are in one millimeter of mercury?

One millimeter of mercury equals 1.000000142 torrs. That is the reverse factor, 1 ÷ 0.9999998575.

What is 10 torrs in millimeters of mercury?

10 Torr = 9.999998575 mmHg.

Is this Torr to mmHg converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.