ChemBench

Gay-Lussac's Law Calculator

Heat a sealed container, pressure climbs.

Pressure tracks temperature in a fixed volume

When a gas can't expand, raising its temperature forces its pressure up proportionally — this is why aerosol cans warn against heat exposure, and why tire pressure rises on a hot day.

A safety-relevant law

Understanding this relationship is why pressure vessels have temperature limits — a sealed rigid container heated enough can build pressure well past its rated capacity.

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ChemBench

Gay-Lussac's Law Calculator

Heat a sealed container, pressure climbs.

Initial pressure (atm)

Initial temperature (K)

Final temperature (K)

Final pressure

1.167 atm

P₁/T₁ = P₂/T₂

What you entered

Initial pressure (atm): 1Initial temperature (K): 300Final temperature (K): 350

1
P₂ = P₁T₂ ÷ T₁
(1 × 350) ÷ 300= 1.1667

Result

Final pressure: 1.167 atm

Heating this fixed-volume gas to 350K raises pressure to 1.167 atm.

Pressure tracks temperature in a fixed volume

When a gas can't expand, raising its temperature forces its pressure up proportionally — this is why aerosol cans warn against heat exposure, and why tire pressure rises on a hot day.

A safety-relevant law

Understanding this relationship is why pressure vessels have temperature limits — a sealed rigid container heated enough can build pressure well past its rated capacity.