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The Gas Laws Calculator uses the ideal gas law, Boyle's law (isothermal process), Gay-Lussac's Law (isovolumetric process) and Charles's Law (isobaric process) to calculate:

- Any gas parameter amongst pressure, volume and temperature in either initial or final state when the other parameters are given or when they are constant

What would you like to calculate? |
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Calculating any missing parameter using the ideal gas law for two states calculations |
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= P_{1} × V_{1}/T_{1}P_{2} × V_{2}/T_{2} = × /T_{1} × / = |

Calculating any missing parameter using the Boyle's Law (isothermal process) for two states calculations |

P_{1} × V_{1} = P_{2} × V_{2} × = × = / = |

Calculating any missing parameter using the Gay-Lussac's Law (isovolumetric process) for two states, initial and final calculations |

= P_{1}/P_{2}T_{1}/T_{2} = // = = = |

Calculating any missing parameter using the Charles's Law (isobaric process) for two states, initial and final calculations |

= V_{1}/V_{2}T_{1}/T_{2} = // = = = |

Gas Laws Calculator Input Values |

Initial pressure of gas (P_{1}) Pa |

Initial volume of gas (V_{1}) m^{3} |

Initial temperature of gas (T_{1}) K |

Final pressure of gas (P_{2}) Pa |

Final volume of gas (V_{2}) m |

Final temperature of gas (T_{2}) K |

Please note that the formula for each calculation along with detailed calculations are available below. As you enter the specific factors of each gas laws calculation, the Gas Laws Calculator will automatically calculate the results and update the Physics formula elements with each element of the gas laws calculation. You can then email or print this gas laws calculation as required for later use.

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Substitute the same number for the two values of temperature in the ideal gas law and then solve the equation of ideal gas for two states for any missing parameter from P_{1}, V_{1}, P_{2} or V_{2}. In this way, you will get the expression for the Boyle's Law (isothermal process).

P_{1} × V_{1} = P_{2} × V_{2}

Substitute the same number for the two values of pressure in the ideal gas law and then solve the equation of ideal gas for two states for any missing parameter from V_{1}, T_{1}, V_{2} or T_{2}. In this way, you will get the expression for the Charles's Law (isobaric process).

The following Physics tutorials are provided within the Thermodynamics section of our Free Physics Tutorials. Each Thermodynamics tutorial includes detailed Thermodynamics formula and example of how to calculate and resolve specific Thermodynamics questions and problems. At the end of each Thermodynamics tutorial you will find Thermodynamics revision questions with a hidden answer that reveals when clicked. This allows you to learn about Thermodynamics and test your knowledge of Physics by answering the test questions on Thermodynamics.

- 13.1 - Temperature. The Zeroth Law of Thermodynamics
- 13.2 - Thermal Expansion
- 13.3 - Absorption of Heat
- 13.4 - Calorimetry (Heat Transfer)
- 13.5 - The First Law of Thermodynamics
- 13.6 - The Kinetic Theory of Gases. Ideal Gases
- 13.7 - Pressure, Temperature and RMS Speed
- 13.8 - Molar Specific Heats and Degrees of Freedom
- 13.9 - Gas Laws
- 13.10 - Entropy and the Second Law of Thermodynamics

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