# Pressure over a surface

This online calculator computes pressure, cause by given mass over given surface in gravity field. Result is displayed using different units of pressure

This online calculator computes pressure caused by a given mass over a given surface in a gravity field.

According to wikipedia, the pressure is the force per unit area applied in a direction perpendicular to the surface of an object.

Mathematically

$P=\frac{dF_n}{dS}$
or
$P=\frac{F_n}{S}$

In a gravity field, the force is created by the weight of an object.

$W=mg$, where g is gravity acceleration, meter per square second.

Thus the formula for pressure in the gravity field will be

$P=\frac{mg}{S}$

By default, this calculator uses g equals 9.80665, which is used for Earth's gravity field. The area is the area of average shoes.

The result is displayed in metric units, pascals, and also in some other units of pressure, used by Pressure units converter

#### Pressure for given weight and surface area

Digits after the decimal point: 2
Pressure, Pa

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PLANETCALC, Pressure over a surface