Convert millimetres of mercury to kilopascals
Enter a value in millimetres of mercury (mmHg) to get kilopascals (kPa). One millimetre of mercury is 0.133322 kilopascals; one kilopascal is 7.5006 millimetres of mercury.
How to use the Millimetre of mercury to kilopascal
- Type the number of millimetres of mercury.
- Click Convert.
- Read the result in kilopascals, plus the same value in every other pressure unit.
mmHg to kPa formula
kilopascals = millimetres of mercury × 0.133322. To go the other way, millimetres of mercury = kilopascals × 7.5006 (see kilopascals to millimetres of mercury).
Worked example
12 mmHg × 0.133322 = 1.5999 kPa.
Millimetres of mercury to kilopascals conversion table
| Millimetres of mercury | Kilopascals |
|---|---|
| 0.1 mmHg | 0.013332 kPa |
| 0.5 mmHg | 0.066661 kPa |
| 1 mmHg | 0.133322 kPa |
| 2 mmHg | 0.266645 kPa |
| 3 mmHg | 0.399967 kPa |
| 5 mmHg | 0.666612 kPa |
| 10 mmHg | 1.3332 kPa |
| 20 mmHg | 2.6664 kPa |
| 25 mmHg | 3.3331 kPa |
| 50 mmHg | 6.6661 kPa |
| 100 mmHg | 13.3322 kPa |
| 250 mmHg | 33.3306 kPa |
| 500 mmHg | 66.6612 kPa |
| 1,000 mmHg | 133.3224 kPa |
About the millimetre of mercury
Blood pressure (e.g. 120/80) and older barometers.
About the kilopascal
Tyre pressure in Australia and Canada; weather in some countries.
Related conversions
Frequently asked questions
How many kilopascals in a millimetre of mercury?
0.133322 kilopascals.
How many millimetres of mercury in a kilopascal?
7.5006 millimetres of mercury.
Is the factor exact?
The factor 0.133322 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.