mmHg to Kilopascals converter

Quick reference

mmHg	Kilopascals
1	0.133322
2	0.266645
5	0.666612
10	1.333224
20	2.666448
25	3.33306
50	6.666119
100	13.332239
250	33.330597
500	66.661194
1,000	133.322387

About pressure units

Pressure units come from different traditions: the pascal is the SI unit but inconveniently small (one newton per square meter), so weather reports use kilopascals or bar, tire gauges in the US use PSI (pounds per square inch), medicine uses mmHg for blood pressure, and diving uses atmospheres, roughly the air pressure at sea level (101,325 Pa exactly). A car tire around 32 PSI is about 2.2 bar; standard blood pressure of 120 mmHg is 16 kPa.

More pressure conversions

Kilopascals → mmHg PSI → Bar Bar → PSI Kilopascals → PSI Atmospheres → PSI Bar → Kilopascals All converters

Frequently asked questions

What is the exact formula for mmHg to Kilopascals?

Multiply the mmHg value by 0.13332239. This comes from the exact unit definitions, not a rounded approximation.

Is this conversion exact?

The underlying ratio is exact where a legal definition exists (for example, 1 inch = 25.4 mm exactly). Displayed results are rounded to six decimal places for readability.

Can I convert Kilopascals back to mmHg?

Yes. Use the reverse converter linked below, or just swap which field you type into: the live converter recalculates either direction.