Solve for pressure, volume, moles, or temperature using the ideal gas law (PV = nRT).
How It Works
How Ideal Gas Law Calculator Works
The ideal gas law relates four properties of a gas — pressure, volume, amount (moles), and temperature — through a single equation using the universal gas constant R. Enter any three known values and the calculator solves for the missing fourth.
FAQ
Frequently Asked Questions
What units does this expect?
Pressure in pascals, volume in cubic meters, amount in moles, and temperature in kelvin — using the SI unit set keeps the gas constant R = 8.314 J/(mol·K) consistent throughout the calculation.
Does this work for real gases too?
It's an approximation that works well for most gases under normal temperature and pressure conditions, but becomes less accurate at very high pressure or very low temperature, where real gas behavior diverges from the idealized model.
