Convert one pascal to psi

Explanation

To convert one pascal to pounds per square inch all we need is to know the conversion factor and we are done. Luckily, we can compute that factor using the units' definitions below.

We find that one pascal is approximately equal to 0.000145 pounds per square inch.

Formula

1 Pa ≈ 0.000145 psi

pascalsPa

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

The pascal (Pa) is the derived SI unit of pressure.

Definition of the pascal

One pascal is the pressure exerted by a force of one newton on a surface of one square meter.

The pascal is homogeneous to kilogram per meter per second squared.

Pa = N m^-2 = kg m⁻¹ s⁻²

The International System of Units 9^th edition p. 137

Equivalences

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

Some Facts

The pascal is quite a small unit. A common housefly laying flat on your hand would apply a pressure of approximately 8 pascals.

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.

pounds per square inchpsi

dimension	pressure
symbol	psi, lbf/in²

The pound per square inch (psi, lbf/in²) or psi is a unit of pressure.

The "pound" in "pound per square inch" is the pound-force, not to be confused with the pound the unit of mass. One pound-force is the force exerted downward by a mass of one avoirdupoids pound on the surface of the Earth.

Definition of the pound per square inch

One psi is equal to the pressure exerted by a force of one pound-force on a surface of one square inch.

Equivalences

One psi is equivalent to:

Other psi units

pound per square inch	psi	1
kilopound per square inch	ksi	1000
megapound per square inch	Mpsi	1 000 000