basic

Ideal Gas Law (PV = nRT) Calculator

Solve for any of P, V, n, or T in PV = nRT.

Solves PV = nRT for any missing variable using R = 8.314 J/(mol·K) (SI) or 0.08206 L·atm/(mol·K). Returns all four variables and checks against STP conditions.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

kPa
L
mol
K

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

PV = nRT; R = 8.314 J/(mol·K)

In depth

Solves PV = nRT for any missing variable using R = 8.314 J/(mol·K) (SI) or 0.08206 L·atm/(mol·K). Returns all four variables and checks against STP conditions.