Hydraulic Pressure Calculator

What is Hydraulic Pressure?

Two unrelated physical situations share the word pressure, and mixing their inputs is the common mistake. A hydraulic ram's pressure is the force it applies divided by the piston area — nothing about the oil's weight matters. The pressure at the bottom of a tank is the weight of the fluid above each square metre — nothing about a piston matters. This page keeps them as separate modes rather than one form with four inputs.

How it works

In mechanical mode the force (in kilonewtons) is divided by the piston area (in square millimetres) to give pascals, reported in MPa, kPa, bar and psi. In hydrostatic mode pressure is density × gravity × column height with standard gravity, so ten metres of water gives about 98 kPa — one bar, the rule of thumb every diver knows as one atmosphere per ten metres. A 50 mm bore at 10 kN is 5.1 MPa; the same bore at 20 kN doubles it, because the area has not changed.

1. Enter your input. Type or paste your input into the field above — the tool responds instantly.
2. Review the result. Output updates live as you type. Everything runs entirely in your browser.
3. Copy or download. Use the Copy button to grab the result, or Download to save it as a file.

Examples

Realistic sample

Type or paste any realistic input — the tool computes the result locally and instantly.

Common mistakes

Expecting a server round-trip

Nothing is uploaded — every tool in this category runs entirely in your browser.