Mechanics
Pressure
Pressure is force per unit area, measuring how concentrated a force is.
Variables
PPa
Pressure
Force per unit area
In SI units: N/m²
Allowed values: greater than 0
FN
Force
Normal force applied
In SI units: kg·m/s²
Am²
Area
Surface area
Allowed values: greater than 0
Derivation
Definition: P = F/A. In fluids, pressure acts perpendicular to surfaces.
Your notes
0/5000
Check value
Round inputs run through this page's calculator. Use it to test your own working or a rearranged form. It is a test case, not a real-world example.
- F = 2 N (Force)
- A = 3 m² (Area)
Result: P = 0.66666667 Pa
Other mechanics formulas with the same quantities
Where this formula is listed
- Mechanics formulas, under Dynamics, alongside Weight, Friction Force, Hooke's Law, Drag Force and Terminal Velocity.
- In the mechanics list it comes after Center of Mass (Two Objects) and before Bulk Modulus.
- Mechanics formula sheet, one of 58 formulas printed with symbol keys and SI units.
- The full formula index, grouped by category and topic.
Common questions
What is the Pressure formula?
Pressure is written P = F/A. Pressure is force per unit area, measuring how concentrated a force is. It belongs to Mechanics, under Dynamics.
What are the units in P = F/A?
In SI units, P is pressure, measured in N/m²; F is force, measured in kg·m/s²; A is area, measured in m².
How is the Pressure formula derived?
Definition: P = F/A. In fluids, pressure acts perpendicular to surfaces. The result is P = F/A.