Kilopascals to millimetres of mercury
Multiply kilopascals by 7.5006 to get millimetres of mercury.
20 kPa = 150.0123 mmHg
How to convert kilopascals to millimetres of mercury
The millimetre of mercury is the conventional millimetre of mercury, exactly 101325/760 pascals (about 133.322 Pa), equal to the torr. The kilopascal is one thousand pascals (10³ Pa), the metric pressure unit.
Worked example — 20 kPa: 20 × 7.5006 = 150.0123 mmHg.
Kilopascals to millimetres of mercury table
| Kilopascals | Millimetres of mercury |
|---|---|
| 1 kPa | 7.5006 mmHg |
| 5 kPa | 37.5031 mmHg |
| 10 kPa | 75.0062 mmHg |
| 16 kPa | 120.0099 mmHg |
| 20 kPa | 150.0123 mmHg |
| 50 kPa | 375.0308 mmHg |
| 100 kPa | 750.0617 mmHg |
| 101.325 kPa | 760 mmHg |
| 200 kPa | 1,500.1234 mmHg |
Reverse and related
About kilopascals and millimetres of mercury
Kilopascal (kPa)
1 kPa = 7.5006 mmHgDefinition. One thousand pascals (10³ Pa), the metric pressure unit
History and origin
The kilopascal is one thousand pascals, a metric multiple of the SI pressure unit. It gives conveniently sized numbers for everyday pressures.
Current use
Kilopascals are used for tyre pressure in metric countries and throughout engineering.
Source: NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi)
Millimetre of mercury (mmHg)
1 mmHg = 0.133322 kPaDefinition. The conventional millimetre of mercury, exactly 101325/760 pascals (about 133.322 Pa), equal to the torr
History and origin
The millimetre of mercury comes from mercury barometers, where pressure was read as the height of a mercury column. It is now fixed conventionally as one 760th of a standard atmosphere, essentially equal to the torr.
Current use
mmHg is the standard unit for blood pressure — a reading of 120/80 mmHg — and for measuring vacuums.
Source: NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi)
Where people use this
Kilopascals: tyre pressure (metric), engineering. Millimetres of mercury: blood pressure, vacuum measurement. 100 kPa is about 750 mmHg.
Every value is carried to full double precision; the display is rounded.
Both units are defined in NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi).
Questions people ask
How many mmHg is 100 kPa?
100 kPa is about 750 mmHg.
How many mmHg in a kPa?
One kilopascal is about 7.5 mmHg.
How many mmHg is 16 kPa?
16 kPa is about 120 mmHg, a typical systolic blood pressure.