# Charles's Law

V_2 / T_2 = V_1 / T_1
Charles's Law Calculator.
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Charles's law tells us that at constant pressure, the volume of an ideal gas is proportional to its temperature. Therefore, for two different states 1 and 2 of the same gas, at constant pressure,

V_2 / T_2 = V_1 / T_1

V1: volume in state 1 in cubic meter
T1: temperature in state 1 in Kelvin
V2: volume in state 2 in cubic meter
P2: temperature in state 2 in Kelvin