Hydraulic Calculator Free is a comprehensive tool that offers a range of basic hydraulic calculations. Users can perform cylinder calculations to determine extension/retraction forces or speeds. Pump calculations are also supported, allowing input of displacement, oil flow, and pressure to derive values for speed, torque, and power, with options for mechanical and volumetric efficiencies.

Additionally, users can conduct hydraulic line calculations for fluid velocity, cross-sectional area, Reynolds number, and pressure drop, with support for 1" or 25mm line diameters in the free version. Orifice calculations are available, enabling input of oil flow, orifice diameter, and pressure drop to calculate the missing value, along with speed-torque-power calculations and unit conversions.