hPa to mmHg Converter

How to convert hectopascals to millimeters of mercury

FormulammHg = hPa × 0.7500615758

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

A hectopascal is smaller than a millimeter of mercury: it takes 1.333223874 hectopascals to make one millimeter of mercury.

Worked examples

1 hectopascal1 hPa × 0.7500615758 = 0.7500615758 mmHg
5 hectopascals5 hPa × 0.7500615758 = 3.750307879 mmHg
10 hectopascals10 hPa × 0.7500615758 = 7.500615758 mmHg
20 hectopascals20 hPa × 0.7500615758 = 15.00123152 mmHg
100 hectopascals100 hPa × 0.7500615758 = 75.00615758 mmHg

Hectopascals to millimeters of mercury conversion table

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

Hectopascals to millimeters of mercury: 0.1–10 hPa
Hectopascals (hPa)	Millimeters of mercury (mmHg)
0.1 hPa	0.075006158 mmHg
0.25 hPa	0.18751539 mmHg
0.5 hPa	0.37503079 mmHg
1 hPa	0.75006158 mmHg
2 hPa	1.5001232 mmHg
3 hPa	2.2501847 mmHg
4 hPa	3.0002463 mmHg
5 hPa	3.7503079 mmHg
6 hPa	4.5003695 mmHg
7 hPa	5.250431 mmHg
8 hPa	6.0004926 mmHg
9 hPa	6.7505542 mmHg
10 hPa	7.5006158 mmHg

Hectopascals to millimeters of mercury: 12–1,000 hPa
Hectopascals (hPa)	Millimeters of mercury (mmHg)
12 hPa	9.0007389 mmHg
15 hPa	11.250924 mmHg
20 hPa	15.001232 mmHg
25 hPa	18.751539 mmHg
30 hPa	22.501847 mmHg
40 hPa	30.002463 mmHg
50 hPa	37.503079 mmHg
75 hPa	56.254618 mmHg
100 hPa	75.006158 mmHg
250 hPa	187.51539 mmHg
500 hPa	375.03079 mmHg
1,000 hPa	750.06158 mmHg

About the units

Hectopascal (hPa)

One hundred pascals, numerically equal to a millibar. Weather maps show sea-level pressure in hPa (around 1013). One hectopascal equals 100 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 hectopascal?

There are 0.7500615758 millimeters of mercury in one hectopascal, and this value is exact by definition.

How do I convert hectopascals to millimeters of mercury?

Multiply the number of hectopascals by 0.7500615758. For example, 10 hPa × 0.7500615758 = 7.500615758 mmHg.

How many hectopascals are in one millimeter of mercury?

One millimeter of mercury equals 1.333223874 hectopascals. That is the reverse factor, 1 ÷ 0.7500615758.

What is 10 hectopascals in millimeters of mercury?

10 hPa = 7.500615758 mmHg.

Is this hPa 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.