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Convert psi to kg/cm²

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  • Last Updated : 03 Mar, 2022
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Pressure is the perpendicular force applied per unit area of a surface. It has SI unit Pascal (Pressure is said to be 1 Pascal if a force of 1 Newton is applied on an area of 1m2). The formula for pressure is given as the force per unit area. It can be represented as a formula in the form of, P = F / A. Where P is pressure, F  is the force acting perpendicular to the surface and A is the surface area on which force is applied. Let’s learn about the conversion of one form of pressure into another,

PSI to kg/cm2 Conversion

PSI is one of the various units used to describe pressure. PSI stands for Pound per Square Inch (Pressure is said to be 1 PSI when 1 pound-force acts on an area of 1 square inch). Tyre pressure is generally measured in PSI.

PSI = pound force / area in inch square

1 PSI = 0.070307 kilogram force per centimeter square

To convert PSI value to kg/cm2 multiply it by 0.070307.

Derivation

1 pound =  0.45359237 kg

1 in2 = 6.4516 cm2 .

Now, 1 PSI = 1 lbf / 1 in2 

= (0.45359237 / 6.4516) kg/cm2

1 PSI = 0.070307 kg/cm2

Sample Problems

Question 1: Convert 2.5 PSI to kg/cm2.

Solution:

2.5 PSI = 2.5 × 0.070307 kg/cm2

= 0.1757675 kg/cm2

Question 2: Is 20 PSI same as 15 kg/cm2.

Solution:

20 PSI = 20 × 0.070307 kg/cm2

= 1.40614 kg/cm2

Which is not equal to 15 kg/cm2. So 20 PSI is not same as 15 kg/cm2.

Question 3: If a 4 lb force is acting on a surface of area 2 in2. Find the pressure in kg/cm2

Solution:

Pressure in PSI = 4/2 PSI

= 2 PSI

(Converting 2 PSI to kg/cm2 )

= 2 × 0.070307 kg/cm2 

= 0.140674 kg/cm2 .

Question 4: Force of 2-kilo pounds acts on a surface of area 10 in2. Find the pressure in kg/cm2

Solution:

Pressure in PSI = 1000/10 PSI

= 100 PSI

(Converting 100 PSI to kg/cm2 )

= 100 × 0.070307 kg/cm2

= 7.0307 kg/cm2 .

Question 5: Convert 1.5 PSI to kg/cm2.

Solution:

 1.5 PSI = 1.5 × 0.070307 kg/cm2

= 0.1054605 kg/cm2 

Question 6: Write 125 PSI in kg/cm2.

Solution:

125 PSI = 125 × 0.070307 kg/cm2

= 0.8.788375 kg/cm2 

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