What this calculator does
Pressure from force or depth works out pressure under a load, and water pressure at depth. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaP = F/A; hydrostatic P = ρgh + atmospheric
The inputs explained
| Field | What to enter |
|---|---|
| Force (N) | A number, measured in N. Starts at 5000. |
| Area (m²) | A number, measured in m². Starts at 0.25. |
| Water depth (m) | A number, measured in m. Starts at 10. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with force
Every other input is held at the calculator’s starting values while force varies. Select any row to load that scenario into the calculator.
How the answer changes with force
| Force (N) | Pressure | In kPa · bar · psi | Water pressure at 10 m |
|---|---|---|---|
| 2,500 | 10,000.0 Pa | 10.000 · 0.1000 · 1.450 | 98.1 kPa gauge |
| 3,750 | 15,000.0 Pa | 15.000 · 0.1500 · 2.176 | 98.1 kPa gauge |
| 5,000 | 20,000.0 Pa | 20.000 · 0.2000 · 2.901 | 98.1 kPa gauge |
| 7,500 | 30,000.0 Pa | 30.000 · 0.3000 · 4.351 | 98.1 kPa gauge |
| 10,000 | 40,000.0 Pa | 40.000 · 0.4000 · 5.802 | 98.1 kPa gauge |
| 15,000 | 60,000.0 Pa | 60.000 · 0.6000 · 8.702 | 98.1 kPa gauge |