Millimeters of mercury (mmHg) to Kilopascals (kPa) Conversion
Millimeters of mercury
The millimetre of mercury (mmHg) is a unit of pressure equal to the pressure exerted by a 1 mm column of mercury at 0 °C and standard gravity — approximately 133.322 Pa. It is the universal clinical standard for measuring blood pressure: normal adult blood pressure is approximately 120/80 mmHg (systolic/diastolic). The mmHg is also used in ophthalmology (intraocular pressure, normal ≈ 10–21 mmHg) and respiratory physiology.
Kilopascals
The kilopascal (kPa) is a unit of pressure equal to exactly 1,000 pascals and is one of the most practical pressure units for everyday engineering. Standard atmospheric pressure is approximately 101.3 kPa. Tyre pressure is commonly specified in kPa in metric countries: a typical car tyre is inflated to 220–250 kPa. Blood pressure in clinical settings is measured in mmHg, but some medical devices express it in kPa (normal systolic ≈ 16 kPa).
| Millimeters of mercury (mmHg) | Kilopascals (kPa) |
|---|---|
| 0.1 mmHg | 0.0133 kPa |
| 1 mmHg | 0.1333 kPa |
| 2 mmHg | 0.2666 kPa |
| 3 mmHg | 0.40 kPa |
| 5 mmHg | 0.6666 kPa |
| 10 mmHg | 1.3332 kPa |
| 20 mmHg | 2.6664 kPa |
| 30 mmHg | 3.9997 kPa |
| 50 mmHg | 6.6661 kPa |
| 100 mmHg | 13.3322 kPa |
| 1000 mmHg | 133.3224 kPa |
Frequently Asked Questions (FAQ)
How many kilopascals are in 1 millimeters of mercury?
1 millimeters of mercury (mmHg) is exactly 0.133322 kilopascals (kPa).
How do I convert millimeters of mercury to kilopascals?
Multiply the value in millimeters of mercury by 0.133322 to get the result in kilopascals. Or use the converter above — type any number and see the result instantly.