140 mmHg to Kilopascals

18.6651 kPa

140 mmHg = 18.6651 kPa

140 mmHg = 18.6651 kPa

To convert mmHg to kilopascals, multiply the value by the conversion factor:

1 mmHg = 0.133322 kPa
140 mmHg × 0.133322 = 18.6651 kPa

Reverse: 18.6651 kilopascals = 140 mmHg

mmHg (mmHg) kilopascals (kPa)
140 18.6651
80 10.6658
100 13.3322
120 15.9986
160 21.3315

mmHg (mmHg)

This unit literally measures pressure by how many millimeters it can push a column of liquid mercury up a tube. It dates back to the first barometers in the 1600s. Despite being archaic, it is the absolute global standard for measuring blood pressure. When a doctor says '120 over 80', they mean mmHg.

Normal systolic blood pressure is around 120 mmHg.

Commonly used in: Blood pressure, Meteorology, Vacuum pumps, Laboratory physics, Medicine.

kilopascals (kPa)

The kilopascal (kPa) is the practical metric unit for everyday pressure. It is widely used in countries that have fully adopted the metric system for tire pressure and engineering data. 100 kPa is conveniently close to 1 atmosphere of pressure.

Standard atmospheric pressure is about 101.3 kPa.

Commonly used in: Tire pressure (Metric countries), Building engineering, Scuba tank pressure, Meteorology, Medical ventilators.