Millimeters Of Mercury to Kilopascals
Type a value in either box to convert between millimeters of mercury and kilopascals. The factor is 0.133322.
| Millimeters Of Mercury | Kilopascals |
|---|---|
| 1 mmHg | 0.133322 kPa |
| 2 mmHg | 0.266645 kPa |
| 3 mmHg | 0.399967 kPa |
| 5 mmHg | 0.666612 kPa |
| 10 mmHg | 1.333224 kPa |
| 25 mmHg | 3.33306 kPa |
| 50 mmHg | 6.666119 kPa |
| 100 mmHg | 13.332239 kPa |
How to use
- Enter a value in the Millimeters Of Mercury field.
- The Kilopascals figure appears immediately — no button to press.
- Typing in the Kilopascals field converts back to Millimeters Of Mercury the same way.
- Use the reference table for the values that come up most often.
Millimeters Of Mercury to Kilopascals formula
To convert millimeters of mercury to kilopascals, multiply by 0.133322387.
kPa = mmHg × 0.133322387
Why this factor: the millimeter of mercury and the kilopascal are both defined against the pascal, so dividing one definition by the other gives 0.133322387 directly. Both definitions are set out in full below.
To go the other way, divide by 0.133322387 — or use the Kilopascals to Millimeters Of Mercury converter, which is the same calculation reversed.
Worked example
Take 100 mmHg and multiply by the factor 0.133322387: the result is 13.332239 kPa.
100 mmHg × 0.133322387 = 13.332239 kPa
The converter above does this for any value you type, in either direction.
What is a millimeter of mercury?
A millimeter of mercury is the pressure exerted by a 1 mm column of mercury, still standard in medicine.
Definition: Defined as exactly 133.322387415 pascals.
Where it is used: Blood pressure readings, intraocular pressure, and respiratory gas pressures.
Worth knowing: Blood pressure is universally reported in mmHg even in fully metric countries — one of the most durable legacy units in medicine.
What is a kilopascal?
A kilopascal is 1,000 pascals, the practical metric pressure unit.
Definition: Exactly 1,000 pascals. Standard atmospheric pressure is 101.325 kPa.
Where it is used: Tyre pressures outside the US, weather reports in Canada, and structural engineering loads.
Millimeters Of Mercury vs Kilopascals
The millimeter of mercury is a specialized unit while the kilopascal is a metric unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many kilopascals are in a millimeter of mercury?
One millimeter of mercury equals 0.133322387 kilopascals.
What is the formula to convert millimeters of mercury to kilopascals?
Multiply the number of millimeters of mercury by 0.133322387. To reverse it, divide by 0.133322387 instead.
How do I convert kilopascals back to millimeters of mercury?
Divide by 0.133322387, which is the same as multiplying by 7.50061576.
How many kilopascals are in 10 millimeters of mercury?
10 mmHg works out to 1.333224 kPa.
Is there anything to watch out for with millimeters of mercury?
Blood pressure is universally reported in mmHg even in fully metric countries — one of the most durable legacy units in medicine.
How is the millimeter of mercury defined?
Defined as exactly 133.322387415 pascals.