Physics

Ideal Gas Calculator

Ideal gas law (SI). Solve for P, V, n, or T.

Free to use — no sign-up or login.

Result

This free Ideal Gas Calculator covers Ideal gas law (SI). Solve for P, V, n, or T.

PV = nRT with R = 8.314 J/(mol·K). Choose the unknown. Related physics tools sit beside How it works, with no account required.

Using the Ideal Gas Calculator

Ideal gas law (SI). Solve for P, V, n, or T. Typical inputs are Solve for, P (Pa), V (m³) and n (mol). How it works beside the form states the identity the Ideal Gas Calculator applies.

FAQ

How do I use the Ideal Gas Calculator?

Open the Ideal Gas Calculator, fill Solve for, P (Pa), V (m³) and n (mol), and read the result. Rearrange PV = nRT for the selected variable.

What formula does the Ideal Gas Calculator use?

The Ideal Gas Calculator uses the identity in How it works. In words: Rearrange PV = nRT for the selected variable.