Charles’s Law Calculator
Solve V1/T1 = V2/T2 for the missing value.
Leave the value you want to find as 0.
Volume grows with temperature
Charles’s law states that a gas at constant pressure expands in direct proportion to its absolute temperature. Double the kelvin temperature and the volume doubles.
It relates two volume-temperature states by V1 over T1 equals V2 over T2, with temperatures in kelvin. Set the unknown to zero and the calculator fills it in.
Precise and private
The calculation runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
What is Charles’s law?
At constant pressure, a gas’s volume is proportional to its absolute temperature. Heat it and it expands.
Which temperature units?
Absolute temperature, in kelvin. Convert Celsius by adding 273.15 first.
What does it solve?
Any one of the two volumes or two temperatures. Leave the unknown as zero.
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