Boyle's law calculator
Fill in what you know and leave the unknown box empty — it works out whichever one is missing. Nothing is uploaded; the arithmetic happens in your browser.
The formula
P₁V₁ = P₂V₂
Where this usually goes wrong
Temperature held constant. Squeeze the volume and the pressure rises in proportion.
Worked example
Double the pressure and 10 L becomes 5 L.
Those numbers are already in the boxes above — press Work it out to see it, then change them for your own.
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