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Convert millimeters of mercury to kilopascals (mmHg to kPa)

Type a value in millimeters of mercury or in kilopascals: the other field updates as you type. Below you will find the formula, a worked example and a mmHg to kPa chart.

Updated on

1 mmHg = 0.133322 kPa

How to convert millimeters of mercury to kilopascals

Formula: kPa = mmHg × 0.133322

Worked example: 120 mmHg → 120 × 0.133322 = 15.9987 kPa

Multiply mmHg by 0.133322 to get kilopascals. A blood pressure of 120/80 mmHg is 16.0/10.7 kPa, the form sometimes used in medical literature.

Millimeters of mercury to kilopascals conversion chart

Millimeters of mercury (mmHg)Kilopascals (kPa)
60 mmHg7.99934 kPa
70 mmHg9.33257 kPa
80 mmHg10.6658 kPa
90 mmHg11.999 kPa
100 mmHg13.3322 kPa
110 mmHg14.6655 kPa
120 mmHg15.9987 kPa
130 mmHg17.3319 kPa
140 mmHg18.6651 kPa
160 mmHg21.3316 kPa
180 mmHg23.998 kPa
200 mmHg26.6645 kPa
760 mmHg101.325 kPa

What is a millimeter of mercury?

The millimeter of mercury, about 133.32 pascals, comes from mercury barometers. It remains the unit of blood pressure worldwide: a reading of 120/80 mmHg means a systolic pressure of 120 and a diastolic pressure of 80.

What is a kilopascal?

The kilopascal equals 1,000 pascals. Canadian and many European car manuals give tire pressures in kPa, for example 240 kPa, which is about 35 psi. It is also used in engineering and for blood pressure in some medical texts.

Frequently asked questions

How many kilopascals are in a millimeter of mercury?

A millimeter of mercury equals 0.133322 kilopascals. To convert any value, multiply the number of millimeters of mercury by 0.133322.

How do you convert millimeters of mercury to kilopascals?

Use the formula kPa = mmHg × 0.133322. Example: 120 mmHg → 120 × 0.133322 = 15.9987 kPa.

How many millimeters of mercury are in a kilopascal?

A kilopascal equals 7.50062 millimeters of mercury. That is the reverse conversion, from kilopascals to millimeters of mercury.

Results are rounded to 6 significant digits; the conversion factors are the exact legal definitions.