kPa to mmHg Converter
Convert kilopascals to millimetres of mercury — the unit blood pressure is still reported in. Results update as you type; exact factors shown.
One kilopascal is 7.5006 millimetre of mercurys — see the exact factor, not a rounded rule of thumb.
How the kpa to mmhg converter works
Pressures convert through the pascal (1 N/m²). One bar is exactly 100 kPa; a standard atmosphere is exactly 101.325 kPa; 1 psi is 6.894757 kPa (a pound-force on a square inch); 1 mmHg is 133.322 Pa by the conventional definition.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
Common pressure conversions
| From | To | Units |
|---|---|---|
| 5 kPa | 37.5031 mmHg | kilopascals to millimetre of mercurys |
| 8 kPa | 60.0049 mmHg | kilopascals to millimetre of mercurys |
| 10 kPa | 75.0062 mmHg | kilopascals to millimetre of mercurys |
| 10.7 kPa | 80.2566 mmHg | kilopascals to millimetre of mercurys |
| 12 kPa | 90.0074 mmHg | kilopascals to millimetre of mercurys |
| 16 kPa | 120.0099 mmHg | kilopascals to millimetre of mercurys |
| 20 kPa | 150.0123 mmHg | kilopascals to millimetre of mercurys |
| 40 kPa | 300.0246 mmHg | kilopascals to millimetre of mercurys |
| 60 kPa | 450.0369 mmHg | kilopascals to millimetre of mercurys |
| 80 kPa | 600.0493 mmHg | kilopascals to millimetre of mercurys |
| 101.325 kPa | 759.9999 mmHg | kilopascals to millimetre of mercurys |
| 133.322 kPa | 999.9971 mmHg | kilopascals to millimetre of mercurys |
Units in this converter and their exact factors
| Unit | Symbol | One unit in pascals |
|---|---|---|
| pascal | Pa | 1 pascal |
| kilopascal | kPa | 1,000 pascal |
| megapascal | MPa | 1,000,000 pascal |
| bar | bar | 100,000 pascal |
| millibar (hectopascal) | mbar | 100 pascal |
| standard atmosphere | atm | 101,325 pascal |
| pound per square inch | psi | 6,894.757293168 pascal |
| millimetre of mercury | mmHg | 133.322387415 pascal |
| inch of mercury | inHg | 3,386.389 pascal |
FAQFrequently asked questions about pressure conversion
How many mmHg in one kPa?
7.50062 mmHg.
What is 16 kPa in mmHg?
120 mmHg — the systolic half of a textbook blood pressure.
Why is blood pressure in mmHg?
Early sphygmomanometers read the height of a mercury column directly, and the unit outlived the instrument.
What is normal blood pressure in kPa?
About 16.0/10.7 kPa, which is 120/80 mmHg.
Is the torr the same as mmHg?
Very nearly — they differ by about one part in seven million, which never matters clinically.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.