kPa to mmHg Converter

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Convert kilopascals to millimeters of mercury at the rate 1 kPa ≈ 7.5006 mmHg. Reference values: 10 kPa ≈ 75.0 mmHg, 16 kPa ≈ 120.0 mmHg, 20 kPa ≈ 150.0 mmHg, 27 kPa ≈ 202.5 mmHg. Useful when metric blood-pressure or vacuum data needs to be expressed in mmHg. Informational conversion only — not medical advice. Browser-local.

Kilopascal (kPa)
Millimeter of mercury (mmHg)

Kilopascal (kPa) → Millimeter of mercury (mmHg)

Quick reference table

Kilopascal (kPa)Millimeter of mercury (mmHg)
8 kPa60.0049 mmHg
10 kPa75.0062 mmHg
12 kPa90.0074 mmHg
15 kPa112.5092 mmHg
18 kPa135.0111 mmHg
20 kPa150.0123 mmHg
25 kPa187.5154 mmHg

Glossary

Kilopascal (kPa)

A kilopascal equals 1,000 pascals. It is the everyday metric pressure unit for tire pressure outside the US (32 psi ≈ 220 kPa), atmospheric pressure (~101 kPa at sea level), HVAC duct pressure and blood-pressure readings reported in metric form (120/80 mmHg ≈ 16.0/10.7 kPa). The standard atmosphere equals 101.325 kPa exactly.

Millimeter of mercury (mmHg)

A millimeter of mercury is the pressure exerted by a 1 mm column of mercury at standard gravity, equal to 133.322 Pa. It is the standard unit for blood pressure (120/80 mmHg) and for vacuum-system pressure in laboratory work. The Torr (named after Torricelli) is essentially the same unit — 1 Torr = 1/760 atm differs from 1 mmHg by less than 0.0001 %.

Metric / SI pressure

In the metric system, pressure is reported in pascals (SI base) or its multiples — kilopascal (kPa, 10³ Pa), megapascal (MPa, 10⁶ Pa) — and the related non-SI unit bar (10⁵ Pa). The millibar/hectopascal (mbar = hPa = 100 Pa) is used in meteorology. All metric units relate by exact powers of ten, so conversions between them are simple shifts of decimal point.

Imperial / US pressure

US engineering and automotive primarily report pressure in pounds per square inch (psi). 1 psi ≈ 6,894.76 Pa, defined as one pound-force per square inch. Standard atmospheric pressure is 14.696 psi. The closely related "psi-gauge" (psi-g) measures pressure above atmospheric, while "psi-absolute" (psi-a) measures total pressure including atmospheric.

Related tools

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