Here we have some conversion calculators for weight, volume, length and pressure. This is how these work: just type a number in the field you know, and press the calculate button. It will convert the units for the rest of the boxes. This derivation of the Ideal Gas Equation allows us to characterize the relationship between the pressure, density, and temperature of the gas sample independent of the volume the gas occupies; it also allows us to determine the density of a gas sample given its pressure and temperature, or determine the molar mass of a gas sample given its ... While fluid power formulas are useful tools for specifying system components and capabilities; other factors such as mechanical efficiencies, fluid dynamics and material limitations must also be considered. Advanced Fluid Systems has taken great care to verify that the conversions and calculations on this page are correct.