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The force $\begin{array}{l}F\end{array}$ applied perpendicular to the surface of an object per unit area $\begin{array}{l}A\end{array}$ over which that force is distributed:

(1)	$\begin{array}{l}\displaystyle p = F \, / \, A\end{array}$

Symbol

Dimension

SI units

Oil metric units

Oil field units

Additional

$\begin{array}{l}p\end{array}$

M L^-1 T^-2

Pa

kPa = 10³ Pa = 0.145038 psi

MPa = 10³ Pa = 145.038 psi

GPa = 10⁶ Pa = 145,038 psi

psi = 6894.76 Pa = 6.89476 kPa

bar = 10⁵ Pa = 100 kPa = 14.5038 psi

atm = 101,325 Pa = 101.325 kPa = 14.6959 psi

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See also

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Pressure (physical property)

See also