Convert millipascals to atmospheres

Explanation

From this page you can convert millipascals to atmospheres (or mPa to atm) simply, by using the application above.

In case you are wondering, to convert from millipascals to atmospheres you need to multiply by 0.000000009869. This factor is calculated using the respective definitions of the two units you can find below.

Formula

1 mPa≈0.000000009869 atm

millipascalsmPa

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

The millipascal (mPa) is a unit of pressure.

Definition of the millipascal

One millipascal is equal to 0.001 pascals.

Equivalences

Here are some equivalences between the millipascal and other pressure units:

Some Facts

A pressure in the order of the millipascal is pretty insignificant. A sheet of paper laying flat on a table somewhere on Earth would apply a pressure of roughly 600 millipascals by itself. The pressure created by the atmosphere above the sheet of paper would be tens of thousands of time greater.

Prefix

milli

10^-3

The prefix milli- comes from the Latin mille meaning a thousand. The associated multiplicative factor is 0.001 or 10^-3.

atmospheresatm

dimension	pressure
symbol	atm

The standard atmosphere (atm) is a unit of pressure.

It is approximately equal to the atmospheric pressure on Earth at sea level.

Definition of the atmosphere

One standard atmosphere is equal to 101325 Pa.

10^th CGPM (1954) p. 80

History

The standard atmosphere is used during the 9^th CGPM in the definition of the international temperature scale with the value of 1013250 dynes per square centimetre. That definition is reiterated during the 10^th CGPM with the mention "for all use" and the equivalence of 101325 newtons per square meter is added (and as you all know, 1 pascal is equivalent to 1 newton per square meter).

Equivalences

One standard atmosphere is equivalent to:

Some Facts

For every 10 meters you go down under water, the pressure increases by one atm.
Venus's surface atmospheric pressure is more than 90 atm.
The atmospheric pressure at the top of Mount Everest is approximately 0.33 atm.

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