Formula:
Pi/Pf = Ti/Tf
Gay Lussac's Law Calculator
What is a Gay-Lussac's Law Calculator?
A Gay-Lussac's Law Calculator is a tool used to calculate the relationship between the pressure and temperature of a gas at a constant volume. Gay-Lussac's Law states that the pressure of a gas is directly proportional to its absolute temperature (in Kelvin) when the volume is kept constant.
Why Use a Gay-Lussac's Law Calculator?
- Important in understanding gas behavior in closed systems.
- Used in engineering, chemistry, and physics to predict how gases will behave under different conditions.
- Helps in designing pressure vessels, engines, and other systems involving gas flow.
How to Calculate Using Gay-Lussac's Law?
The formula is:

Where:
- P₁ = Initial pressure (Pa or atm)
- T₁ = Initial temperature (K)
- P₂ = Final pressure (Pa or atm)
- T₂ = Final temperature (K)
You can rearrange the formula to solve for any unknown variable, for example, to find P₂:

When to Use a Gay-Lussac's Law Calculator?
- Calculating pressure changes in gas-filled containers.
- Analyzing gas reactions in a rigid container at varying temperatures.
- Studying the behavior of gases in engines and industrial applications.
- Designing safety systems that involve pressure-temperature relationships in systems like aerospace or chemical processing.