mmHg to kPa Converter
Convert millimeter of mercury to kilopascal instantly. 1 mmHg = 0.1333223874 kPa, worked steps and a full reference table.
How to use it
- Type the value in millimeter of mercury — the result updates as you type.
- Use Swap to flip the direction, or change either dropdown to convert between any two units.
- Click the result to copy it. The URL updates too, so you can bookmark or share the exact conversion.
Examples
| 1 mmHg | 0.1333223874 kPa |
| 5 mmHg | 0.6666119371 kPa |
| 10 mmHg | 1.333223874 kPa |
| 100 mmHg | 13.33223874 kPa |
One millimeter of mercury equals 0.13332239 kilopascals (kPa). To convert millimeter of mercuries to kilopascals, multiply by 0.13332239; to go back the other way, multiply by 7.5006158 instead.
The converter above does it as you type and shows the working underneath, so you can check the arithmetic rather than take the number on trust.
What millimeter of mercuries and kilopascals actually measure
Millimeter of mercury (mmHg) — Millimetres of mercury, essentially identical to the torr. Blood pressure and medical measurement.
Kilopascal (kPa) — A kilopascal is a thousand pascals. Tyre pressures and weather reporting in metric countries.
mmHg to kPa conversion table
The most common values, worked out in advance. Anything not listed can be typed straight into the converter.
| mmHg | kPa |
|---|---|
| 1 mmHg | 0.13332239 kPa |
| 2 mmHg | 0.26664477 kPa |
| 5 mmHg | 0.66661194 kPa |
| 10 mmHg | 1.3332239 kPa |
| 25 mmHg | 3.3330597 kPa |
| 50 mmHg | 6.6661194 kPa |
| 100 mmHg | 13.332239 kPa |
How to convert millimeter of mercuries to kilopascals by hand
Multiply the number of millimeter of mercuries by 0.13332239.
For example, 25 mmHg × 0.13332239 = 3.3330597 kPa.
Going the other way, divide by 0.13332239 — or multiply by 7.5006158, which is the same thing and easier to do in your head.
Everything runs in your browser
There is no server involved in the calculation. The numbers you type never leave your device, nothing is logged, and the page keeps working with no connection once it has loaded. That is not a marketing line — it is simply how the tool is built, because a calculation like this has no reason to touch a network.
Questions people ask
How many kPa are in 1 mmHg?
1 mmHg equals exactly 0.1333223874 kPa. Multiply any value in millimeter of mercury by 0.1333223874 to get kilopascal.
Is anything uploaded to a server?
No. The whole calculation happens in your browser. Nothing is sent anywhere, and the page keeps working offline once loaded.
Last updated 18 August 2026