Ideal Gas Law Calculator
Solve pressure, volume, temperature or moles with PV=nRT.
Enter your values
ⓘ Live results
Results
- Pressure
- 0.9993 atm
- Pressure
- 101.25 kPa
- Pressure
- 14.69 psi
Quick answer
PV = nRT, with R = 0.0821 L·atm/(mol·K).
PV = nRT
How to use the Ideal Gas Law Calculator
- 1Enter the number of moles of gas.
- 2Enter the absolute temperature in Kelvin (add 273.15 to Celsius).
- 3Enter the volume the gas occupies to find its pressure.
Worked example
Using the values the calculator loads with:
Inputs
- Moles1 mol
- Temperature298 K
- Volume24.47 L
Results
- Pressure0.9993 atm
- Pressure101.25 kPa
- Pressure14.69 psi
Frequently asked questions
What are STP conditions?
Standard temperature and pressure is commonly 0°C (273.15K) and 1 atm, where one mole occupies 22.4 L.
Does this work for real gases?
The ideal gas law is a good approximation for most gases at moderate pressure and temperature.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.