Combined Gas Law Calculator

ALWAYS use Degrees Kelvin when using this calculator.

Revised 06/16/2017

The above formula is the Combined Gas Law and is used when Pressure, Volume and Temperature change.
Remembering that
Boyle's Law is applicable only when Pressure and Volume change,
Charles' Law applies only when Temperature and Volume change and
Gay-Lussac's Law applies only when pressure and temperature change.

As a practice example, 8 liters of a gas has a pressure of 760 torr and a temperature of 600 Degrees Kelvin.
Calculate the temperature when the volume is 2 liters and the pressure is 1520 torr.
Your answer should equal 300 Degrees Kelvin.

Do you want to solve for:

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Significant Figures >>>
Numbers are displayed in scientific notation with the amount of significant figures you specify. For easier readability, numbers between .001 and 1,000 will not be in scientific notation but will still have the same precision.
You may change the number of significant figures displayed by changing the number in the box above.
Most browsers, will display the answers properly but if you are seeing no answers at all, enter a zero in the box above, which will eliminate all formatting but at least you will see the answers.

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