Specific Gas Constant Calculator

Find the specific gas constant from molar mass.

Specific gas constant (J/(kg·K)) 287

Formula: R_specific = R ÷ M

Step-by-step with your numbers:

1. Values used:

2. Molar mass = 28.97 g/mol

4. Specific gas constant = 287J/(kg·K)

Did we solve your problem today?

The specific gas constant is the universal gas constant divided by molar mass.

The math behind it

R_specific = R ÷ M (M in kg/mol). It lets you use PV = mR_specific·T with mass instead of moles.

Air (28.97 g/mol) → about 287 J/(kg·K).

Why per gas?

Each gas has its own molar mass, so its specific constant differs.