Capillary Rise Calculator - Free Online Tool

The capillary rise effect describes how a liquid spontaneously moves upward within narrow spaces, like porous materials or tubes. Our calculator models this physical phenomenon using the Jurin's Law principle, which relates the height of rise to several measurable properties.

To get an accurate calculation, you need three primary inputs: the surface tension (γ) of your liquid, the radius (r) of the capillary tube or pore opening, and the density (ρ) of the fluid. The formula fundamentally balances the upward force generated by surface tension against the downward pull of gravity.

• Inputs: Ensure all units are consistent (e.g., using SI units like Newtons/meter and meters).
• Calculation: The tool solves for the height (h) using these parameters, providing an instant estimate of the liquid's potential rise.

To maximize the accuracy of your capillary rise calculations, focus on precision in measurement and understanding the scope of the model.

• Measure Radius Precisely: If you are using a physical tube, measure the internal diameter as accurately as possible. A small error in 'r' results in a large proportional change in the calculated height.
• Verify Fluid Properties: Before inputting data, confirm that your liquid properties (γ, ρ) were measured at the exact temperature and pressure of your experiment or system.
• Consider Viscosity: While not directly in the basic Jurin's calculation, remember that fluid viscosity affects how quickly the liquid reaches its theoretical maximum height.