Definition
One pascal is defined as a pressure of one newton per square metre (1 Pa = 1 N/m2). It measures the force applied per unit area.
Dimensional formula
Pressure = Force / Area Force = mass × acceleration = M L T−2 Area = L2
Dimensional formula: [M1 L−1 T−2]
Related and practical units
- 1 Pa = 1 N/m2
- 1 kilopascal (kPa) = 1000 Pa
- 1 megapascal (MPa) = 106 Pa
- 1 bar = 100,000 Pa
- 1 atmosphere (atm) ≈ 101,325 Pa
- 1 torr ≈ 133.322 Pa
Quick examples
- Atmospheric pressure at sea level ≈ 101.3 kPa
- Car tire pressure ≈ 200–250 kPa
- Hydraulic press may operate at 10 MPa
