# Barlows Formula Calculator

Barlow's Formula calculates the relationship of internal pressure to allowable stress, nominal thickness and diameter of pipe. The below Barlow's formula calculator can be used to calculate internal pressure that a pipe can withstand to its dimensions & strength of materials. Also you can find allowable stress, nominal thickness and diameter of the pipe based on the other inputs. The formula was given by Peter Barlow, a self-educated mathematician.

## Calculate Internal Pressure of Pipe using Barlow's Formula

Barlow's Formula calculates the relationship of internal pressure to allowable stress, nominal thickness and diameter of pipe. The below Barlow's formula calculator can be used to calculate internal pressure that a pipe can withstand to its dimensions & strength of materials. Also you can find allowable stress, nominal thickness and diameter of the pipe based on the other inputs. The formula was given by Peter Barlow, a self-educated mathematician.

Code to add this calci to your website

#### Formula:

Pressure = (2 x S x T) / D
**Where,**
S = Allowable Stress
T = Wall Thickness
D = Outside Diameter
### Example:

A pipe having a allowable stress of 8 Pa, wall thickness of 7 cm and outside diameter of 6 cm. Calculate the internal pressure a pipe can withstand using Barlow's Formula.

#### Solution:

Pressure = (2 x 8 x 7) / 6

= 0.0027 psig.