**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.

**Tonne Per Meter Cube** (abbreviations: **t/m2, or tpm2**): is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength interms of tonne per meter cube.

## How to Convert Pounds Per Square Inches to Tonnes Per Meters Cube

*Example: How many tonnes per meters cube are equivalent to 80.64 pounds per square inches?*

As;

1 pounds per square inches = 0.689476 tonnes per meters cube

80.64 pounds per square inches = Y tonnes per meters cube

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

Y equals 80.64 times 0.689476 over 1

(i.e.) Y = 80.64 * 0.689476 / 1 = 55.59934464 tonnes per meters cube

Answer is: 55.59934464 tonnes per meters cube are equivalent to 80.64 pounds per square inches.

*Practice Question: Convert the following units into t/m2:*

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

( i ) 64.1 psi

( ii ) 62.38 psi

( iii ) 89.15 psi