millimetre of mercury

millimetre of mercury

Non-SI unit

Name

Symbol

Quantity

Expressed in terms of SI base units

Expressed in terms of other SI units

millimetre of mercury

mmHg

pressure

≈ 133.322 kg m⁻¹ s⁻²

≈ 133.322 Pa

Definition

The millimetre of mercury, symbol mmHg, is a non-SI unit of pressure.

One mmHg is approximately equal to 133.322 Pa.