Convert hectopascals to torr

Explanation

From this page you can convert hectopascals to torr (or hPa to Torr) simply, by using the application above.

In case you are wondering, to convert from hectopascals to torr you need to multiply by 0.7501. This factor is calculated using the respective definitions of the two units you can find below.

Formula

1 hPa≈0.7501 Torr

hectopascalshPa

dimension	pressure
system	International system of units (SI)
symbol	hPa

The hectopascal (hPa) is a unit of pressure.

One hectopascal is equal to a millibar, this explains why this unit is used in meteorology for atmospheric pressure when integer powers of 1000 are prefered in almost all other fields of science.

Definition of the hectopascal

One hectopascal is equal to 100 pascals.

Equivalences

One hectopascal is equivalent to:

Prefix

hecto

10²

The prefix hecto- comes from the Greek hekatón meaning a hundred. The associated multiplicative factor is 100 or 10².

Pressure units

nanopascal	nPa	0.000 000 001
micropascal	µPa	0.000 001
millipascal	mPa	0.001
centipascal	cPa	0.01
decipascal	dPa	0.1
pascal	Pa	1
dekapascal	daPa	10
hectopascal	hPa	100
kilopascal	kPa	1000
megapascal	MPa	1 000 000
gigapascal	GPa	1 000 000 000

The International System of Units

The International System of Units or SI (from the French Système international (d'unité)), also called metric system in the U.S., is a coherent system of units that was published 1960. It is official in nearly every country.

The General Conference on Weights and Measures (Conférence générale des poids et mesures) is tasked with overseeing the SI.

Related Conversions

torrTorr

dimension	pressure
symbol	Torr

The torr (Torr) a deprecated unit of pressure.

Definition of the torr

One torr is equal to ¹⁰¹³²⁵⁄₇₆₀ pascals.

The International System of Units 1^st edition p. 16

Equivalences

One torr is equivalent to:

History

The torr and millimeter of mercury were once exactly equivalent before their respective definitions diverged when the torr was redefined as 1/760 of the standard atmosphere. The two units are still very similar, one torr behing approximately equal to 0.999999858 millimeter of mercury.

The unit is named after Evangelista Torricelli, an Italian physicist who discovered the principle of the barometer.

Other torr units

millitorr	mTorr	0.001
torr	Torr	1
kilotorr	kTorr	1000
megatorr	MTorr	1 000 000