Boyle’s Law Calculator
Relates the pressure and volume of a gas at constant temperature. Choose what to find; the field for that value is ignored.
Answer
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Both states
Reading this —
The formula
P₁ × V₁ = P₂ × V₂
At constant temperature, squeezing a gas into half the volume doubles its pressure.
What to watch out for
Use absolute pressure, not gauge pressure: a tyre gauge reads the pressure above atmospheric.
Frequently Asked Questions
What is the final volume if 2 L at 1 atm is squeezed to 2 atm?
1 L.
Does it matter which pressure unit I use?
No, since the ratio is what counts. Both can even use different units here, because they are converted first.