**Definitions:**

**Pound Per Square Inch** (abbreviations: **psi, or lb/in2**): is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.

**Bar** (abbreviation: **bar**): is a metric (still not approved by the International System of Units, SI) unit of pressure. It is exactly equal to 100,000 Pa and slightly lower than the current average atmospheric pressure on Earth, at sea level.

## How to Convert Pounds Per Square Inches to Bars

*Example: How many Bars are equivalent to 79.11 pounds per square inches?*

As;

1 pounds per square inches = 0.06895 Bars

79.11 pounds per square inches = Y Bars

Assuming Y is the answer, and by criss-cross principle;

Y equals 79.11 times 0.06895 over 1

(i.e.) Y = 79.11 * 0.06895 / 1 = 5.4546345 Bars

Answer is: 5.4546345 Bars are equivalent to 79.11 pounds per square inches.

*Practice Question: Convert the following units into bar:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 58.89 psi

( ii ) 72.75 psi

( iii ) 31.94 psi