Lets derive the water pressure formula depth. It must be noted the. Pin On Density Relative Density In this paper a new formulation of the density of water based primarily on the work of Kell 2 as a function of temperature on the 1990 International Temperature Scale is presented. . The density of Water Formula. The Density of Water by Temperature calculator computes the density of water as a function of temperature using the standard density of water ρ at standard temperature and pressure and the unique temperature expansion coefficient of water. Density is mass divided by volume ρmv and water was used as the basis for establishing the metric unit of mass which means a cubic centimeter 1cm 3 of water weighs one gram 1g. There is only one universal formula for density Massvolume. There are many devices available to measure the density of water as follows. P is the water pressure in Pa. Actually the exact de...