The ideal gas law is a mathematical equation, PV=nRT, that describes the behavior of an ideal gas by relating its pressure (P), volume (V), number of moles (n), and absolute temperature (T). The constant (R) is the ideal gas constant, and its value depends on the units used for the other variables. This law is useful for calculating one of the four variables if the other three are known.   

Ideal Gas Law Calculators

(P = nRT / V)

n (mol):

R:

T (Temperature):

K °C

V (Volume):

L dL cL mL mm³ cm³ dm³ in³

P =

atm Pa kPa bar torr psi mmHg Kg.f/m²

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(V = nRT / P)

n (mol):

R:

T (Temperature):

K °C

P (Pressure):

atm Pa kPa bar torr psi mmHg Kg.f/m²

V =

L dL cL mL mm³ cm³ dm³ in³

---

(n = PV / RT)

P (Pressure):

atm Pa kPa bar torr psi mmHg Kg.f/m²

V (Volume):

L dL cL mL mm³ cm³ dm³ in³

R:

T (Temperature):

K °C

n =

---

(T = PV / nR)

P (Pressure):

atm Pa kPa bar torr psi mmHg Kg.f/m²

V (Volume):

L dL cL mL mm³ cm³ dm³ in³

n (mol):

R:

T =

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CHEMISTRY	OTHER
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molality ( m ) ( m = gram / MW.Kg )	Weight UNIT Converter
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Ideal Gas Law ( PV = nRT )	BMI Calculator