mmHg to mbar Converter

How to convert millimeters of mercury to millibars

Formulambar = mmHg × 1.333223874

Multiply the value in millimeters of mercury by 1.333223874. To go the other way, multiply by 0.7500615758 (or divide by 1.333223874).

A millimeter of mercury is larger than a millibar: one millimeter of mercury contains 1.333223874 millibars.

Worked examples

1 millimeter of mercury1 mmHg × 1.333223874 = 1.333223874 mbar
5 millimeters of mercury5 mmHg × 1.333223874 = 6.666119371 mbar
10 millimeters of mercury10 mmHg × 1.333223874 = 13.33223874 mbar
20 millimeters of mercury20 mmHg × 1.333223874 = 26.66447748 mbar
100 millimeters of mercury100 mmHg × 1.333223874 = 133.3223874 mbar

Millimeters of mercury to millibars conversion table

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

Millimeters of mercury to millibars: 0.1–10 mmHg
Millimeters of mercury (mmHg)	Millibars (mbar)
0.1 mmHg	0.13332239 mbar
0.25 mmHg	0.33330597 mbar
0.5 mmHg	0.66661194 mbar
1 mmHg	1.3332239 mbar
2 mmHg	2.6664477 mbar
3 mmHg	3.9996716 mbar
4 mmHg	5.3328955 mbar
5 mmHg	6.6661194 mbar
6 mmHg	7.9993432 mbar
7 mmHg	9.3325671 mbar
8 mmHg	10.665791 mbar
9 mmHg	11.999015 mbar
10 mmHg	13.332239 mbar

Millimeters of mercury to millibars: 12–1,000 mmHg
Millimeters of mercury (mmHg)	Millibars (mbar)
12 mmHg	15.998686 mbar
15 mmHg	19.998358 mbar
20 mmHg	26.664477 mbar
25 mmHg	33.330597 mbar
30 mmHg	39.996716 mbar
40 mmHg	53.328955 mbar
50 mmHg	66.661194 mbar
75 mmHg	99.991791 mbar
100 mmHg	133.32239 mbar
250 mmHg	333.30597 mbar
500 mmHg	666.61194 mbar
1,000 mmHg	1,333.2239 mbar

About the units

Millimeter of mercury (mmHg)

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

Millibar (mbar)

The millibar (mbar) is a unit of pressure in the metric system. One millibar equals 100 pascals (Pa).

Frequently asked questions

How many millibars are in one millimeter of mercury?

There are 1.333223874 millibars in one millimeter of mercury, and this value is exact by definition.

How do I convert millimeters of mercury to millibars?

Multiply the number of millimeters of mercury by 1.333223874. For example, 10 mmHg × 1.333223874 = 13.33223874 mbar.

How many millimeters of mercury are in one millibar?

One millibar equals 0.7500615758 millimeters of mercury. That is the reverse factor, 1 ÷ 1.333223874.

What is 10 millimeters of mercury in millibars?

10 mmHg = 13.33223874 mbar.

Is this mmHg to mbar 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.