Gay-Lussac's Law Calculator
Calculate P2 using P1/T1 = P2/T2 with temperatures in K.
How to Use This Calculator
1
Enter P1
Initial pressure (consistent units).
2
Enter T1 and T2
Temperatures in kelvin.
3
Calculate P2
Click Calculate to get final pressure.
Formula
P1 / T1 = P2 / T2
Example: P1=1 atm, T1=300 K, T2=330 K → P2=1.1 atm
About Gay-Lussac's Law
At constant volume, gas pressure is directly proportional to absolute temperature.
Frequently Asked Questions
Can I use °C?
Convert to K by adding 273.15 before using the relation.
Does volume change?
No, the law assumes constant volume and amount of gas.