Ideal Gas Law Calculator
💨 Gas Laws & Fluids. Use the Ideal gas law formula to find pressure, volume, amount, temperature: pick the value you want, type the others, and the answer updates as you go.
Pressure101.33 kPa
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Pressure | kPa |
| Volume | L |
| Amount | mol |
| Temperature | K |
Worked example
Find the pressure when Volume = 22.4 L, Amount = 1 mol, Temperature = 273 K.
Using PV = nRT: Pressure = 101.33 kPa.
Frequently asked questions
What is the formula for Ideal gas law?
PV = nRT.
What do the letters stand for, and what units are used?
Pressure in kPa, Volume in L, Amount in mol, Temperature in K.
How do you calculate pressure?
Put the values into PV = nRT. For example, with Volume = 22.4 L, Amount = 1 mol, Temperature = 273 K, pressure = 101.33 kPa.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (pressure, volume, amount, temperature) and fill in the others: it rearranges the formula for you.
