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📘 About the Pressure
Pressure is how much force acts on each unit of area. The same force spread over a smaller area gives a higher pressure, which is why a knife cuts and snowshoes stop you sinking.
Enter the force in newtons and the area in m², cm² or mm². The calculator gives the pressure in pascals and converts it to kPa, bar, atmospheres and psi.
🧮 Formula
For pressure in a liquid at depth h, use P = ρgh instead.
✏️ Worked examples
Standing on one foot
You get| Pressure (Pa = N/m²) | 40,000 |
| Pressure (kPa) | 40 |
| Pressure (bar) | 0.4 |
| Pressure (atm) | 0.394769 |
| Pressure (psi) | 5.80151 |
A 600 N person on 150 cm² exerts 40 kPa.
Try this example →Drawing pin
You get| Pressure (Pa = N/m²) | 200,000,000 |
| Pressure (kPa) | 200,000 |
| Pressure (bar) | 2,000 |
| Pressure (atm) | 1,973.85 |
| Pressure (psi) | 29,007.5 |
20 N on a 0.1 mm² point gives 200,000,000 Pa — enough to push into wood.
Try this example →🧭 How to use this calculator
What you enter
- Force (F) (N)
- Area (A)
- Area unit
What you get
- Pressure (Pa = N/m²)
- Pressure (kPa)
- Pressure (bar)
- Pressure (atm)
- Pressure (psi)
💡 Pressure unit conversions
- 1 Pa = 1 N/m²
- 1 kPa = 1,000 Pa
- 1 bar = 100,000 Pa
- 1 atm = 101,325 Pa = 1.01325 bar = 760 mmHg
- 1 psi = 6,894.76 Pa
❓ Frequently asked questions
What is the formula for pressure?
Pressure = force ÷ area (P = F/A). The SI unit is the pascal (Pa), equal to 1 N/m².
Why does a sharp knife cut better?
Its edge has a tiny area, so the same force produces a much larger pressure.
How many pascals is 1 atmosphere?
101,325 Pa, or about 101.3 kPa.
How do I convert cm² to m²?
Divide by 10,000. For example, 50 cm² = 0.005 m².