STP Standard Temperature and Pressure is defined as the International Union of Pure and Applied Chemistry. STP is defined as a temperature of 273.15 K (0 oC, 32 oF) and absolute pressures comes at 1 atm (1.01325X 105 Pa).
STP calculator is an online tool used for calculating the standard temperature and pressure easily. It takes values as input and calculates the standard Temperature and Pressure, so it is very easy in solving the problems on the Standard Temperature and Pressure Calculations.
STP is usually used in the imperial and USA systems of units as air at 60 oF (520 oR, 15.6 oC) and 14.696 psia (1 atm, 1.013325 bara)
1 mol if the gas is given as 23.6442 liters.
These are used to define the volume term Sm3 (Standard cubic meter)