The ideal gas law relates the pressure, volume, amount and temperature of a gas through the equation PV equals nRT, where R is the universal gas constant. This calculator solves for whichever of the four variables you leave blank when you supply the other three. Work in SI units: pressure in pascals, volume in cubic meters, amount in moles and temperature in kelvin, with R taken as 8.314462618 joules per mole per kelvin. The ideal gas law is a cornerstone of chemistry and thermodynamics, describing how a gas responds when you compress it, heat it, or add more of it, and it is accurate for most gases under everyday conditions. Enter your three known values, press calculate, and the missing quantity appears instantly, all computed privately in your browser.
It solves the ideal gas law PV equals nRT for pressure, volume, moles, or temperature. Enter any three values and it finds the fourth.
R is the gas constant, about 8.314 joules per mole kelvin in SI units. Use pascals, cubic meters, moles, and kelvin for a consistent result.
Yes. The ideal gas law requires absolute temperature in kelvin, so convert from Celsius by adding 273.15.
The ideal gas law relates the pressure, volume, amount and temperature of a gas through the equation PV equals nRT, where R is the universal gas constant. This calculator solves for whichever of the four variables you leave blank when you supply the other three.
Yes. Ideal Gas Law Calculator is completely free, with no sign-up and no usage limits.
Yes. Ideal Gas Law Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Ideal Gas Law Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.